diff --git a/src/vnet/dev/args.h b/src/vnet/dev/args.h
index 0c49d1f..a256cfe 100644
--- a/src/vnet/dev/args.h
+++ b/src/vnet/dev/args.h
@@ -24,7 +24,7 @@
 typedef union
 {
   u8 boolean;
-  u8 uint32;
+  u32 uint32;
   u8 *string;
 } vnet_dev_arg_value_t;