diff --git a/ycmd/completers/language_server/language_server_completer.py b/ycmd/completers/language_server/language_server_completer.py
index 6617e52187..3d588a4347 100644
--- a/ycmd/completers/language_server/language_server_completer.py
+++ b/ycmd/completers/language_server/language_server_completer.py
@@ -2377,7 +2377,8 @@ def _SendInitialize( self, request_data ):
                                           'additional_workspace_dirs',
                                           [] ) )
 
-      extra_capabilities = self._settings.get( 'capabilities' , {} )
+      extra_capabilities = {}
+      extra_capabilities.updaet( self._settings.get( 'capabilities' , {} ) )
       extra_capabilities.update( self.ExtraCapabilities() )
 
       msg = lsp.Initialize( request_id,