diff --git a/org.fortiss.tooling.kernel/trunk/src/org/fortiss/tooling/kernel/internal/DummyTopLevelElement.java b/org.fortiss.tooling.kernel/trunk/src/org/fortiss/tooling/kernel/internal/DummyTopLevelElement.java
index 556156f84a4f8abf59475f63c20460e9a5fc8941..8444728e195ea68d3de3f1b68438e18e32618492 100644
--- a/org.fortiss.tooling.kernel/trunk/src/org/fortiss/tooling/kernel/internal/DummyTopLevelElement.java
+++ b/org.fortiss.tooling.kernel/trunk/src/org/fortiss/tooling/kernel/internal/DummyTopLevelElement.java
@@ -42,7 +42,6 @@ final class DummyTopLevelElement implements ITopLevelElement {
 	/** Constructor. */
 	public DummyTopLevelElement(EObject root) {
 		Assert.isNotNull(root);
-		Assert.isTrue(root.eResource() == null);
 		this.root = root;
 	}