diff --git a/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/IpDscp.java b/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/IpDscp.java
index 27596b7..f19e051 100644
--- a/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/IpDscp.java
+++ b/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/IpDscp.java
@@ -227,7 +227,7 @@
 
     @Override
     public String toString() {
-        return Integer.toHexString(dscp);
+        return "0x" + Integer.toHexString(dscp);
     }
 
     public void writeByte(ChannelBuffer c) {