diff --git a/assembly/assembly-ide-war/pom.xml b/assembly/assembly-ide-war/pom.xml
index bd097af557..23520e5612 100644
--- a/assembly/assembly-ide-war/pom.xml
+++ b/assembly/assembly-ide-war/pom.xml
@@ -23,8 +23,6 @@
     <name>Che IDE :: Compiling GWT Application</name>
     <properties>
         <generated.sources.directory>${project.build.directory}/generated-sources/gen</generated.sources.directory>
-        <maven.compiler.source>1.7</maven.compiler.source>
-        <maven.compiler.target>1.7</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
     <dependencies>
@@ -427,6 +425,7 @@
                     </dependency>
                 </dependencies>
                 <configuration>
+                    <gwtSdkFirstInClasspath>true</gwtSdkFirstInClasspath>
                     <extraJvmArgs>${gwt.compiler.extraJvmArgs}</extraJvmArgs>
                     <modules>
                         <module>org.eclipse.che.ide.IDE</module>
@@ -434,7 +433,6 @@
                     <!-- don' remove it we will use it then need to found bug in compiled JS -->
                     <!--style>DETAILED</style-->
                     <logLevel>${gwt.compiler.logLevel}</logLevel>
-                    <enableClosureCompiler>${gwt.compiler.enableClosureCompiler}</enableClosureCompiler>
                 </configuration>
             </plugin>
             <plugin>
diff --git a/assembly/assembly-wsagent-war/pom.xml b/assembly/assembly-wsagent-war/pom.xml
index 39be203ec6..6fd7b02052 100644
--- a/assembly/assembly-wsagent-war/pom.xml
+++ b/assembly/assembly-wsagent-war/pom.xml
@@ -284,8 +284,11 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-war-plugin</artifactId>
                 <configuration>
-                    <packagingExcludes>WEB-INF/lib/*gwt*.jar,
-                        WEB-INF/lib/gin-*.jar</packagingExcludes>
+                    <packagingExcludes>
+                        WEB-INF/lib/*gwt*.jar,
+                        WEB-INF/lib/gin-*.jar,
+                        WEB-INF/lib/jsr305*.jar
+                    </packagingExcludes>
                 </configuration>
             </plugin>
         </plugins>
diff --git a/assembly/assembly-wsmaster-war/pom.xml b/assembly/assembly-wsmaster-war/pom.xml
index 6bb26c6d8c..74134dd030 100644
--- a/assembly/assembly-wsmaster-war/pom.xml
+++ b/assembly/assembly-wsmaster-war/pom.xml
@@ -285,7 +285,7 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-war-plugin</artifactId>
                 <configuration>
-                    <packagingExcludes>WEB-INF/lib/**gwt**</packagingExcludes>
+                    <packagingExcludes>WEB-INF/lib/**gwt**, WEB-INF/lib/jsr305*.jar</packagingExcludes>
                 </configuration>
             </plugin>
             <!-- Source Generator invocation -->
diff --git a/core/commons/che-core-commons-test/pom.xml b/core/commons/che-core-commons-test/pom.xml
index 2373696fb3..bce7cfeb64 100644
--- a/core/commons/che-core-commons-test/pom.xml
+++ b/core/commons/che-core-commons-test/pom.xml
@@ -57,6 +57,11 @@
             <artifactId>javax.inject</artifactId>
             <scope>provided</scope>
         </dependency>
+        <dependency>
+            <groupId>javax.servlet</groupId>
+            <artifactId>javax.servlet-api</artifactId>
+            <scope>provided</scope>
+        </dependency>
         <dependency>
             <groupId>org.eclipse.persistence</groupId>
             <artifactId>javax.persistence</artifactId>
diff --git a/core/commons/che-core-commons-test/src/main/java/org/eclipse/che/commons/test/servlet/MockServletInputStream.java b/core/commons/che-core-commons-test/src/main/java/org/eclipse/che/commons/test/servlet/MockServletInputStream.java
new file mode 100644
index 0000000000..d3561f5850
--- /dev/null
+++ b/core/commons/che-core-commons-test/src/main/java/org/eclipse/che/commons/test/servlet/MockServletInputStream.java
@@ -0,0 +1,44 @@
+/*******************************************************************************
+ * Copyright (c) 2012-2017 Codenvy, S.A.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *   Codenvy, S.A. - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.che.commons.test.servlet;
+
+import javax.servlet.ReadListener;
+import javax.servlet.ServletInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+/** Utility class for mocking  {@link ServletInputStream} */
+public class MockServletInputStream extends ServletInputStream {
+    private final InputStream data;
+
+    public MockServletInputStream(InputStream data) {
+        this.data = data;
+    }
+
+    @Override
+    public int read() throws IOException {
+        return this.data.read();
+    }
+
+    @Override
+    public boolean isFinished() {
+        return false;
+    }
+
+    @Override
+    public boolean isReady() {
+        return false;
+    }
+
+    @Override
+    public void setReadListener(ReadListener readListener) {
+    }
+}
diff --git a/ide/che-core-ide-app/pom.xml b/ide/che-core-ide-app/pom.xml
index 062f1d6d9e..1251c6e247 100644
--- a/ide/che-core-ide-app/pom.xml
+++ b/ide/che-core-ide-app/pom.xml
@@ -26,12 +26,14 @@
         <dto-generator-out-directory>${project.build.directory}/generated-sources/dto/</dto-generator-out-directory>
         <findbugs.failonerror>false</findbugs.failonerror>
         <generated.sources.directory>${project.build.directory}/generated-sources/gen</generated.sources.directory>
-        <maven.compiler.source>1.7</maven.compiler.source>
-        <maven.compiler.target>1.7</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <webappDirectory>${project.build.directory}/${project.build.finalName}</webappDirectory>
     </properties>
     <dependencies>
+        <dependency>
+            <groupId>com.google.code.findbugs</groupId>
+            <artifactId>jsr305</artifactId>
+        </dependency>
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
diff --git a/ide/commons-gwt/pom.xml b/ide/commons-gwt/pom.xml
index 5afdfcdae9..18b949f7fc 100644
--- a/ide/commons-gwt/pom.xml
+++ b/ide/commons-gwt/pom.xml
@@ -25,6 +25,10 @@
         <generated.test.sources.directory>${project.build.directory}/generated-test-sources/dto</generated.test.sources.directory>
     </properties>
     <dependencies>
+        <dependency>
+            <groupId>com.google.code.findbugs</groupId>
+            <artifactId>jsr305</artifactId>
+        </dependency>
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
diff --git a/ide/commons-gwt/src/main/java/com/google/gwt/webworker/linker/DedicatedWorkerLinker.java b/ide/commons-gwt/src/main/java/com/google/gwt/webworker/linker/DedicatedWorkerLinker.java
index 19d64305a4..a0d8f39f1f 100644
--- a/ide/commons-gwt/src/main/java/com/google/gwt/webworker/linker/DedicatedWorkerLinker.java
+++ b/ide/commons-gwt/src/main/java/com/google/gwt/webworker/linker/DedicatedWorkerLinker.java
@@ -45,12 +45,6 @@ public class DedicatedWorkerLinker extends SelectionScriptLinker {
     return "";
   }
 
-  @Override
-  protected String getModuleSuffix(TreeLogger logger, LinkerContext context)
-      throws UnableToCompleteException {
-    return "";
-  }
-
   @Override
   protected String getSelectionScriptTemplate(TreeLogger logger,
       LinkerContext context) throws UnableToCompleteException {
diff --git a/plugins/plugin-machine/che-plugin-machine-ssh-client/pom.xml b/plugins/plugin-machine/che-plugin-machine-ssh-client/pom.xml
index a4f09b73b1..301e0b0f0c 100644
--- a/plugins/plugin-machine/che-plugin-machine-ssh-client/pom.xml
+++ b/plugins/plugin-machine/che-plugin-machine-ssh-client/pom.xml
@@ -24,8 +24,6 @@
     <properties>
         <dto-generator-out-directory>${project.build.directory}/generated-sources/dto/</dto-generator-out-directory>
         <findbugs.failonerror>false</findbugs.failonerror>
-        <maven.compiler.source>1.7</maven.compiler.source>
-        <maven.compiler.target>1.7</maven.compiler.target>
     </properties>
     <dependencies>
         <dependency>
diff --git a/plugins/plugin-maven/che-plugin-maven-server/src/test/java/org/eclipse/che/plugin/maven/server/WorkspaceTest.java b/plugins/plugin-maven/che-plugin-maven-server/src/test/java/org/eclipse/che/plugin/maven/server/WorkspaceTest.java
index 9695e0bcc4..6e2c99918d 100644
--- a/plugins/plugin-maven/che-plugin-maven-server/src/test/java/org/eclipse/che/plugin/maven/server/WorkspaceTest.java
+++ b/plugins/plugin-maven/che-plugin-maven-server/src/test/java/org/eclipse/che/plugin/maven/server/WorkspaceTest.java
@@ -728,8 +728,8 @@ public class WorkspaceTest extends BaseTest {
                           "  <version>1.0</version>\n" +
                           "  <name>SpringDemo</name>\n" +
                           "  <properties>\n" +
-                          "    <maven.compiler.source>1.6</maven.compiler.source>\n" +
-                          "    <maven.compiler.target>1.6</maven.compiler.target>\n" +
+                          "    <maven.compiler.source>1.8</maven.compiler.source>\n" +
+                          "    <maven.compiler.target>1.8</maven.compiler.target>\n" +
                           "  </properties>\n" +
                           "  <dependencies>\n" +
                           "      <dependency>\n" +
diff --git a/plugins/plugin-maven/che-plugin-maven-server/src/test/resources/EffectivePom/pom.xml b/plugins/plugin-maven/che-plugin-maven-server/src/test/resources/EffectivePom/pom.xml
index 35810a9915..9b59534944 100644
--- a/plugins/plugin-maven/che-plugin-maven-server/src/test/resources/EffectivePom/pom.xml
+++ b/plugins/plugin-maven/che-plugin-maven-server/src/test/resources/EffectivePom/pom.xml
@@ -83,7 +83,6 @@
         <gmaven-plugin.providerSelection>2.0</gmaven-plugin.providerSelection>
         <!-- maven-gpg-plugin -->
         <gpg.useagent>true</gpg.useagent>
-        <gwt.compiler.enableClosureCompiler>true</gwt.compiler.enableClosureCompiler>
         <gwt.compiler.extraJvmArgs>-Xss512m -Xmx2048m</gwt.compiler.extraJvmArgs>
         <gwt.compiler.logLevel>INFO</gwt.compiler.logLevel>
         <!-- The system property jacoco.outputDir needs to be override on the command line
@@ -114,9 +113,6 @@
         <maven.compiler.optimize>true</maven.compiler.optimize>
         <maven.compiler.showDeprecation>true</maven.compiler.showDeprecation>
         <maven.compiler.showWarnings>true</maven.compiler.showWarnings>
-        <maven.compiler.source>1.8</maven.compiler.source>
-        <!-- maven-compiler-plugin -->
-        <maven.compiler.target>1.8</maven.compiler.target>
         <!-- maven-enforcer-plugin -->
         <maven.min.version>3.1.1</maven.min.version>
         <maven.private.repo.url>https://maven.codenvycorp.com/content/groups/codenvy-public-group/</maven.private.repo.url>
diff --git a/plugins/plugin-maven/maven-server/maven-server-impl/src/test/resources/EffectivePom/pom.xml b/plugins/plugin-maven/maven-server/maven-server-impl/src/test/resources/EffectivePom/pom.xml
index e182843c24..064a30fce5 100644
--- a/plugins/plugin-maven/maven-server/maven-server-impl/src/test/resources/EffectivePom/pom.xml
+++ b/plugins/plugin-maven/maven-server/maven-server-impl/src/test/resources/EffectivePom/pom.xml
@@ -82,7 +82,6 @@
         <gmaven-plugin.providerSelection>2.0</gmaven-plugin.providerSelection>
         <!-- maven-gpg-plugin -->
         <gpg.useagent>true</gpg.useagent>
-        <gwt.compiler.enableClosureCompiler>true</gwt.compiler.enableClosureCompiler>
         <gwt.compiler.extraJvmArgs>-Xss512m -Xmx2048m</gwt.compiler.extraJvmArgs>
         <gwt.compiler.logLevel>INFO</gwt.compiler.logLevel>
         <!-- The system property jacoco.outputDir needs to be override on the command line
diff --git a/plugins/plugin-ssh-key/che-plugin-ssh-key-ide/pom.xml b/plugins/plugin-ssh-key/che-plugin-ssh-key-ide/pom.xml
index f03c4891fd..eb71ac4469 100644
--- a/plugins/plugin-ssh-key/che-plugin-ssh-key-ide/pom.xml
+++ b/plugins/plugin-ssh-key/che-plugin-ssh-key-ide/pom.xml
@@ -24,8 +24,6 @@
     <properties>
         <dto-generator-out-directory>${project.build.directory}/generated-sources/dto/</dto-generator-out-directory>
         <findbugs.failonerror>false</findbugs.failonerror>
-        <maven.compiler.source>1.7</maven.compiler.source>
-        <maven.compiler.target>1.7</maven.compiler.target>
     </properties>
     <dependencies>
         <dependency>
diff --git a/pom.xml b/pom.xml
index d4250774fc..e9d048a45b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -48,6 +48,11 @@
     </properties>
     <dependencyManagement>
         <dependencies>
+            <dependency>
+                <groupId>com.google.code.findbugs</groupId>
+                <artifactId>jsr305</artifactId>
+                <version>${version.jsr305.plugin}</version>
+            </dependency>
             <dependency>
                 <groupId>org.eclipse.che</groupId>
                 <artifactId>assembly-ide-war</artifactId>