diff --git a/src/main/java/de/dhbwstuttgart/target/generate/ASTToTargetAST.java b/src/main/java/de/dhbwstuttgart/target/generate/ASTToTargetAST.java
index 6508b0a5..5db79459 100644
--- a/src/main/java/de/dhbwstuttgart/target/generate/ASTToTargetAST.java
+++ b/src/main/java/de/dhbwstuttgart/target/generate/ASTToTargetAST.java
@@ -297,7 +297,7 @@ public class ASTToTargetAST {
                         } catch (ClassNotFoundException e) {
                             classLoader.loadClass(code);
                         }
-                        auxiliaries.put(className, code);
+                        auxiliaries.put(superClassName, code);
                     }
                     FunNGenerator.GenericParameters gep = null;
                     if (!usedFunN.containsKey(className)) {