diff --git a/src/main/java/de/dhbwstuttgart/target/generate/ASTToTargetAST.java b/src/main/java/de/dhbwstuttgart/target/generate/ASTToTargetAST.java
index 14dd4afe..3fb42ee1 100644
--- a/src/main/java/de/dhbwstuttgart/target/generate/ASTToTargetAST.java
+++ b/src/main/java/de/dhbwstuttgart/target/generate/ASTToTargetAST.java
@@ -537,6 +537,7 @@ public class ASTToTargetAST {
 
             var classGenerics = generics(owner);
             var genericsOfClass = classGenerics.javaGenerics();
+            var txGenericsOfClass = classGenerics.txGenerics();
             var simplifiedConstraints = new HashSet<>(this.simplifiedConstraints);
 
             HashSet<TypePlaceholder> txTypeVariables = new HashSet<>();
@@ -545,7 +546,7 @@ public class ASTToTargetAST {
             HashSet<TypePlaceholder> javaTypeVariablesOfClass = new HashSet<>();
 
             methodFindTypeVariables(method, genericsOfClass, javaTypeVariablesOfClass, javaTypeVariables, equality);
-            methodFindTypeVariables(method, genericsOfClass, txTypeVariablesOfClass, txTypeVariables, txEquality);
+            methodFindTypeVariables(method, txGenericsOfClass, txTypeVariablesOfClass, txTypeVariables, txEquality);
 
             methodFindConstraints(owner, method, simplifiedConstraints, javaTypeVariables, classGenerics.userDefinedGenerics, javaTypeVariablesOfClass, javaResult, equality);
             methodFindConstraints(owner, method, simplifiedConstraints, txTypeVariables, classGenerics.userDefinedGenerics, txTypeVariablesOfClass, txResult, txEquality);