diff --git a/myems-api/core/datasource.py b/myems-api/core/datasource.py
index 14c96b63..54d5961c 100644
--- a/myems-api/core/datasource.py
+++ b/myems-api/core/datasource.py
@@ -104,7 +104,7 @@ class DataSourceCollection:
                  'mongodb',
                  'influxdb'):
             raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
-                                   description='API.INVALID_DATA_SOURCE_PROTOCOL.')
+                                   description='API.INVALID_DATA_SOURCE_PROTOCOL')
         protocol = new_values['data']['protocol']
 
         if 'connection' not in new_values['data'].keys() or \
@@ -278,10 +278,25 @@ class DataSourceItem:
 
         if 'protocol' not in new_values['data'].keys() \
                 or new_values['data']['protocol'] not in \
-                ('modbus-tcp', 'modbus-rtu', 'bacnet-ip', 's7', 'profibus', 'profinet', 'opc-ua', 'lora', 'simulation',
-                 'controllogix', 'weather'):
+                ('modbus-tcp',
+                 'modbus-rtu',
+                 'bacnet-ip',
+                 's7',
+                 'profibus',
+                 'profinet',
+                 'opc-ua',
+                 'lora',
+                 'simulation',
+                 'controllogix',
+                 'weather',
+                 'mysql',
+                 'sqlserver',
+                 'postgresql',
+                 'oracle',
+                 'mongodb',
+                 'influxdb'):
             raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
-                                   description='API.INVALID_DATA_SOURCE_PROTOCOL.')
+                                   description='API.INVALID_DATA_SOURCE_PROTOCOL')
         protocol = new_values['data']['protocol']
 
         if 'connection' not in new_values['data'].keys() or \