diff --git a/nodes/src/main/java/io/aexp/nodes/graphql/Parameter.java b/nodes/src/main/java/io/aexp/nodes/graphql/Parameter.java
index 4ef8436..738a470 100644
--- a/nodes/src/main/java/io/aexp/nodes/graphql/Parameter.java
+++ b/nodes/src/main/java/io/aexp/nodes/graphql/Parameter.java
@@ -40,10 +40,7 @@ public void setValue(T value) {
 
     @Override
     public String toString() {
-        return "Parameter{" +
-                "key='" + key + '\'' +
-                ", value=" + value +
-                '}';
+        return toString("Parameter");
     }
 
     String toString(String name) {