diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/calls/model/ResolvedCallImpl.java b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/calls/model/ResolvedCallImpl.java
index f69c1617fdb..7682ca44d9e 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/calls/model/ResolvedCallImpl.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/calls/model/ResolvedCallImpl.java
@@ -313,6 +313,6 @@ public class ResolvedCallImpl<D extends CallableDescriptor> implements ResolvedC
     }
 
     private void assertNotCompleted(String elementName) {
-        if (completed) throw new IllegalStateException(elementName + " is erased after resolution completion.");
+        assert !completed: elementName + " is erased after resolution completion.";
     }
 }