diff --git a/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/ICMPv4Code.java b/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/ICMPv4Code.java
index 6466eee..ced5737 100644
--- a/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/ICMPv4Code.java
+++ b/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/ICMPv4Code.java
@@ -90,4 +90,9 @@
     public void putTo(PrimitiveSink sink) {
         sink.putShort(code);
     }
+
+    @Override
+    public String toString() {
+        return String.valueOf(this.code);
+    }
 }