diff --git a/tests/org.eclipse.xtext.tests/src/org/eclipse/xtext/metamodelreferencing/tests/EcoreReferenceTestLanguage.xtext b/tests/org.eclipse.xtext.tests/src/org/eclipse/xtext/metamodelreferencing/tests/EcoreReferenceTestLanguage.xtext
index a8e1a8b5b..5867c543a 100755
--- a/tests/org.eclipse.xtext.tests/src/org/eclipse/xtext/metamodelreferencing/tests/EcoreReferenceTestLanguage.xtext
+++ b/tests/org.eclipse.xtext.tests/src/org/eclipse/xtext/metamodelreferencing/tests/EcoreReferenceTestLanguage.xtext
@@ -8,7 +8,7 @@
  *******************************************************************************/
 grammar org.eclipse.xtext.metamodelreferencing.tests.EcoreReferenceTestLanguage with org.eclipse.xtext.common.Terminals
 
-import "http://www.eclipse.org/2011/tmf/xtext/ecorePerNsURI"
+import "http://www.eclipse.org/2011/tmf/xtext/ecorePerNsURI" // the warning is intentional
 import "http://www.eclipse.org/2011/tmf/xtext/ecorePerPlatformPlugin"
 import "http://www.eclipse.org/2011/tmf/xtext/ecorePerPlatformResource"
 import "http://www.eclipse.org/emf/2002/Ecore"