diff --git a/com.avaloq.tools.ddk.xtext.test.core/src/com/avaloq/tools/ddk/xtext/test/scoping/AbstractScopingTest.java b/com.avaloq.tools.ddk.xtext.test.core/src/com/avaloq/tools/ddk/xtext/test/scoping/AbstractScopingTest.java
index 5b39ece84..a456a2d64 100644
--- a/com.avaloq.tools.ddk.xtext.test.core/src/com/avaloq/tools/ddk/xtext/test/scoping/AbstractScopingTest.java
+++ b/com.avaloq.tools.ddk.xtext.test.core/src/com/avaloq/tools/ddk/xtext/test/scoping/AbstractScopingTest.java
@@ -864,7 +864,7 @@ protected EObject getCrossReferencedObject(final int sourceTag, final boolean tr
         sourceObject = EcoreUtil.resolve(objects.get(0), context);
       } else {
         // TODO DSL-166: Handle this case when needed for tests.
-        fail("Multiple references not supported yet"); //$NON-NLS-1$
+        throw new AssertionError("Multiple references not supported yet"); //$NON-NLS-1$
       }
     } else {
       sourceObject = (EObject) context.eGet(reference, true);