diff --git a/src/main/java/de/dhbwstuttgart/target/generate/ASTToTargetAST.java b/src/main/java/de/dhbwstuttgart/target/generate/ASTToTargetAST.java
index bfe353a1..639bdfd0 100644
--- a/src/main/java/de/dhbwstuttgart/target/generate/ASTToTargetAST.java
+++ b/src/main/java/de/dhbwstuttgart/target/generate/ASTToTargetAST.java
@@ -240,8 +240,8 @@ public class ASTToTargetAST {
         );
     }
 
-    private static final Map<String, FunNGenerator.GenericParameters> usedFunN = new HashMap<>();
-    private static final Set<Integer> usedFunNSuperTypes = new HashSet<>();
+    private final Map<String, FunNGenerator.GenericParameters> usedFunN = new HashMap<>();
+    private final Set<Integer> usedFunNSuperTypes = new HashSet<>();
 
     public Map<String, byte[]> auxiliaries = new HashMap<>();
 
@@ -295,7 +295,9 @@ public class ASTToTargetAST {
                         try {
                             classLoader.findClass(superClassName);
                         } catch (ClassNotFoundException e) {
-                            classLoader.loadClass(code);
+                            try {
+                                classLoader.loadClass(code);
+                            } catch (LinkageError ignored) {}
                         }
                         auxiliaries.put(superClassName, code);
                     }
@@ -306,7 +308,9 @@ public class ASTToTargetAST {
                         try {
                             classLoader.findClass(className);
                         } catch (ClassNotFoundException e) {
-                            classLoader.loadClass(code);
+                            try {
+                                classLoader.loadClass(code);
+                            } catch (LinkageError ignored) {}
                         }
                         usedFunN.put(className, gep);
                         auxiliaries.put(className, code);