diff --git a/src/de/dhbwstuttgart/syntaxtree/type/FunN.java b/src/de/dhbwstuttgart/syntaxtree/type/FunN.java
index 46de6566..dc521b87 100644
--- a/src/de/dhbwstuttgart/syntaxtree/type/FunN.java
+++ b/src/de/dhbwstuttgart/syntaxtree/type/FunN.java
@@ -24,7 +24,7 @@ public class FunN extends RefType {
 	 * @return
 	 */
 	public FunN(List<RefTypeOrTPHOrWildcardOrGeneric> params) {
-		super(new JavaClassName("Fun"+(params.size())), params, new NullToken());
+		super(new JavaClassName("Fun"+(params.size()-1)), params, new NullToken());
 	}
 
 	/**