diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/context/ConstructorContext.java b/compiler/backend/src/org/jetbrains/jet/codegen/context/ConstructorContext.java
index fae01feb874..1db8a84f920 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/context/ConstructorContext.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/context/ConstructorContext.java
@@ -39,7 +39,11 @@ public class ConstructorContext extends MethodContext {
 
     @Override
     public StackValue getOuterExpression(StackValue prefix, boolean ignoreNoOuter) {
-        return closure != null && closure.getCaptureThis() != null ? local1 : null;
+        StackValue stackValue = closure != null && closure.getCaptureThis() != null ? local1 : null;
+        if (!ignoreNoOuter && stackValue == null) {
+            throw new UnsupportedOperationException("Don't know how to generate outer expression for " + getContextDescriptor().getContainingDeclaration());
+        }
+        return stackValue;
     }
 
     @Override