diff --git a/Tests/Manual/CompilationTests/TestCases/11.j b/Tests/Manual/CompilationTests/TestCases/11.j
new file mode 100644
index 000000000..c7900c4d9
--- /dev/null
+++ b/Tests/Manual/CompilationTests/TestCases/11.j
@@ -0,0 +1,28 @@
+// Expected output: 256
+
+/*
+
+START_EXPECTED
+Error on line 10778 of file [unknown]
+SyntaxError:
+int myIvar;
+    ^
+ERROR line 12 in file:[__PATH__]: Instance variable 'myIvar' is already declared for class MySubclass in superclass MySuperclass
+END_EXPECTED
+*/
+
+@import <Foundation/Foundation.j>
+
+@implementation MySuperclass : CPObject
+{
+	int myIvar;
+}
+
+@end
+
+@implementation MySubclass : MySuperclass
+{
+	int myIvar;
+}
+
+@end
\ No newline at end of file