diff --git a/jar/NichtHaskell.jar b/jar/NichtHaskell.jar
index 31102fa..118fd7f 100644
Binary files a/jar/NichtHaskell.jar and b/jar/NichtHaskell.jar differ
diff --git a/jar/NichtHaskellCompiler-jar-with-dependencies.jar b/jar/NichtHaskellCompiler-jar-with-dependencies.jar
index 464c741..8a123ac 100644
Binary files a/jar/NichtHaskellCompiler-jar-with-dependencies.jar and b/jar/NichtHaskellCompiler-jar-with-dependencies.jar differ
diff --git a/src/main/java/abstractSyntaxTree/StatementExpression/AssignStatementExpression.java b/src/main/java/abstractSyntaxTree/StatementExpression/AssignStatementExpression.java
index 8fa9144..4c53fbc 100644
--- a/src/main/java/abstractSyntaxTree/StatementExpression/AssignStatementExpression.java
+++ b/src/main/java/abstractSyntaxTree/StatementExpression/AssignStatementExpression.java
@@ -166,7 +166,7 @@ public class AssignStatementExpression extends AbstractType implements IExpressi
 
                             currentType = typeContext.get(typeOfPrevious).get(instVar.fieldName);
 
-                            String descriptor = getFieldDescriptor(currentType, typeContext, instVar.fieldName, thisClass);
+                            String descriptor = getFieldDescriptor(currentType, typeContext, instVar.fieldName, typeOfPrevious);
                             mv.visitFieldInsn(Opcodes.PUTFIELD, typeOfPrevious, instVar.fieldName, descriptor);
                             continue;
                         } else {