diff --git a/translate.h b/translate.h
index 692affc..0e520f7 100644
--- a/translate.h
+++ b/translate.h
@@ -29,6 +29,7 @@
 #include <netinet/udp.h>
 
 #include "clatd.h"
+#include "common.h"
 
 #define MAX_TCP_HDR (15 * 4)  // Data offset field is 4 bits and counts in 32-bit words.