diff --git a/resources/bytecode/javFiles/Pair.jav b/resources/bytecode/javFiles/Pair.jav
new file mode 100644
index 000000000..aacb8d4f3
--- /dev/null
+++ b/resources/bytecode/javFiles/Pair.jav
@@ -0,0 +1,32 @@
+import java.util.Vector;
+import java.lang.Boolean;
+import java.lang.Object;
+
+class Pair<U, T> {
+    U a;
+    T b;
+
+    make(x) {
+		var ret = new Pair<>();
+		ret.a = x.elementAt(0);
+		ret.b = x.elementAt(1);
+		return ret;
+    }
+ /*
+    eq(a, b) {
+    	b = a;
+    	return a == b;
+    }
+
+    compare( p) {
+		return  eq(p.a, p.b);
+		//return p.a == p.b;
+    }
+
+    void m(Pair<?, ?> p, List<? extends Eq> b)
+    {
+	//this.compare(p); //1, type incorrect
+	this.compare(this.make(b)); //2, OK
+    }
+*/
+}
\ No newline at end of file
diff --git a/src/main/java/de/dhbwstuttgart/target/generate/ASTToTargetAST.java b/src/main/java/de/dhbwstuttgart/target/generate/ASTToTargetAST.java
index 86c94f7e9..f7cab4a41 100644
--- a/src/main/java/de/dhbwstuttgart/target/generate/ASTToTargetAST.java
+++ b/src/main/java/de/dhbwstuttgart/target/generate/ASTToTargetAST.java
@@ -445,7 +445,6 @@ public class ASTToTargetAST {
                     addToPairs(result, minimalPair);
             }
 
-
             // All unbounded type variables (bounds not in method)
             outer:
             for (var typeVariable : typeVariables) {
@@ -482,7 +481,8 @@ public class ASTToTargetAST {
                 typeVariablesOfClass.add((TypePlaceholder) pair.getLeft());
             }
 
-            typeVariables.addAll(findTypeVariables(method.getReturnType(), equality));
+            if (!(method instanceof Constructor))
+                typeVariables.addAll(findTypeVariables(method.getReturnType(), equality));
             for (var arg : method.getParameterList().getFormalparalist()) {
                 typeVariables.addAll(findTypeVariables(arg.getType(), equality));
             }
diff --git a/src/test/java/targetast/TestComplete.java b/src/test/java/targetast/TestComplete.java
index b8fc0b8d9..b1773e150 100644
--- a/src/test/java/targetast/TestComplete.java
+++ b/src/test/java/targetast/TestComplete.java
@@ -598,4 +598,10 @@ public class TestComplete {
         var classFiles = generateClassFiles("OLFun2.jav", new ByteArrayClassLoader());
         var instance = classFiles.get("OLFun2").getDeclaredConstructor().newInstance();
     }
+
+    @Test
+    public void pairTest() throws Exception {
+        var classFiles = generateClassFiles("Pair.jav", new ByteArrayClassLoader());
+        var instance = classFiles.get("Pair").getDeclaredConstructor().newInstance();
+    }
 }