diff --git a/src/de/dhbwstuttgart/typeinference/unify/model/ReferenceType.java b/src/de/dhbwstuttgart/typeinference/unify/model/ReferenceType.java
index e82affe0..02ab38a0 100644
--- a/src/de/dhbwstuttgart/typeinference/unify/model/ReferenceType.java
+++ b/src/de/dhbwstuttgart/typeinference/unify/model/ReferenceType.java
@@ -43,14 +43,14 @@ public final class ReferenceType extends UnifyType {
 		if(newParams.hashCode() == typeParams.hashCode() && newParams.equals(typeParams))
 			return this;
 		
-		return new ReferenceType(new String(typeName), newParams);
+		return new ReferenceType(typeName, newParams);
 	}
 	
 	@Override
 	public UnifyType setTypeParams(TypeParams newTp) {
 		if(newTp.hashCode() == typeParams.hashCode() && newTp.equals(typeParams))
 			return this; // reduced the amount of objects created
-		return new ReferenceType(new String(typeName), newTp);
+		return new ReferenceType(typeName, newTp);
 	}
 	
 	@Override