diff --git a/resources/bytecode/javFiles/Bug306.jav b/resources/bytecode/javFiles/Bug306.jav
new file mode 100644
index 00000000..d06ca677
--- /dev/null
+++ b/resources/bytecode/javFiles/Bug306.jav
@@ -0,0 +1,13 @@
+import java.lang.Integer;
+import java.util.List;
+
+class Base {
+    m(List<Integer> a) {}
+}
+
+public class Bug306 extends Base {
+    @Override
+    m(List<Integer> b) {
+        b.add(1);
+    }
+}
diff --git a/src/main/java/de/dhbwstuttgart/target/generate/ASTToTargetAST.java b/src/main/java/de/dhbwstuttgart/target/generate/ASTToTargetAST.java
index 412fbc54..3578ab02 100644
--- a/src/main/java/de/dhbwstuttgart/target/generate/ASTToTargetAST.java
+++ b/src/main/java/de/dhbwstuttgart/target/generate/ASTToTargetAST.java
@@ -52,7 +52,7 @@ public class ASTToTargetAST {
         return converter.result;
     }
 
-    record Generics(JavaGenerics javaGenerics, TxGenerics txGenerics) {
+    public record Generics(JavaGenerics javaGenerics, TxGenerics txGenerics) {
     }
 
 
@@ -385,7 +385,7 @@ public class ASTToTargetAST {
             if (superMethod.isPresent()) {
                 // If we find a super method to override, use its parameters and return types
                 returnType = convert(superMethod.get().getReturnType(), this.generics.javaGenerics);
-                params = convert(superMethod.get().getParameterList(), this.generics.javaGenerics);
+                params = convert(superMethod.get().getParameterList(), method.getParameterList(), this.generics.javaGenerics);
             }
 
             List<MethodParameter> finalParams = params;
@@ -404,6 +404,15 @@ public class ASTToTargetAST {
         return result;
     }
 
+    private List<MethodParameter> convert(ParameterList superList, ParameterList paraList, JavaGenerics generics) {
+        var list = new ArrayList<MethodParameter>();
+        for (var i = 0; i < paraList.getFormalparalist().size(); i++) {
+            var param = paraList.getParameterAt(i);
+            list.add(new MethodParameter((TargetPattern) convert(param)).withType(convert(superList.getParameterAt(i).getType(), generics)));
+        }
+        return list;
+    }
+
     protected TargetSwitch.Case convert(SwitchBlock block) {
         return new TargetSwitch.Case(block.getLabels().stream().map(this::convert).toList(), convert((Block) block), block.isExpression);
     }
diff --git a/src/main/java/de/dhbwstuttgart/typeinference/unify/model/FiniteClosure.java b/src/main/java/de/dhbwstuttgart/typeinference/unify/model/FiniteClosure.java
index c29e0468..81eac231 100644
--- a/src/main/java/de/dhbwstuttgart/typeinference/unify/model/FiniteClosure.java
+++ b/src/main/java/de/dhbwstuttgart/typeinference/unify/model/FiniteClosure.java
@@ -630,7 +630,6 @@ implements IFiniteClosure  {
 			i += 1;
 		}
 
-		System.out.println(args);
 		return args;
 	}
 
diff --git a/src/test/java/TestComplete.java b/src/test/java/TestComplete.java
index f6e49b70..6000fcec 100644
--- a/src/test/java/TestComplete.java
+++ b/src/test/java/TestComplete.java
@@ -995,4 +995,11 @@ public class TestComplete {
         var clazz = classFiles.get("Bug301");
         var instance = clazz.getDeclaredConstructor().newInstance();
     }
+
+    @Test
+    public void testBug306() throws Exception {
+        var classFiles = generateClassFiles(new ByteArrayClassLoader(), "Bug306.jav");
+        var clazz = classFiles.get("Bug306");
+        var instance = clazz.getDeclaredConstructor().newInstance();
+    }
 }