diff --git a/include/tokens.h b/include/tokens.h
index bf4890f68..e3dc6b281 100755
--- a/include/tokens.h
+++ b/include/tokens.h
@@ -44,3 +44,4 @@
 #define USE             US
 #define VALIDATE        VA
 #define WARNING         WA
+#define ZOOM            ZO