diff --git a/src/client.h b/src/client.h
index 16475c4bc9dd89955a5fd4b9209fff846b8e1f23..6d24bd015045d408a3449647113ead2df9c29546 100644
--- a/src/client.h
+++ b/src/client.h
@@ -30,6 +30,7 @@
 
 /* Definitions */
 #define VERSIONFILE "conf/version"
+#define UPDATEOPTION "--update"
 #define DEBUG 0
 
 /* Statics strings */