diff --git a/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/IPv4Address.java b/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/IPv4Address.java
index 32f709b..fcdc73a 100644
--- a/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/IPv4Address.java
+++ b/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/IPv4Address.java
@@ -123,7 +123,7 @@
 
         if (address.length != LENGTH) {
             throw new IllegalArgumentException(
-                    "Invalid byte array length for IPv4Address address: " + address.length);
+                    "Invalid byte array length for IPv4 address: " + address.length);
         }
 
         int raw =