diff --git a/src/common.h b/src/common.h
index 4fd6d331..66892b78 100644
--- a/src/common.h
+++ b/src/common.h
@@ -6,7 +6,7 @@
 #define IRSSI_GLOBAL_CONFIG "irssi.conf" /* config file name in /etc/ */
 #define IRSSI_HOME_CONFIG "config" /* config file name in ~/.irssi/ */
 
-#define IRSSI_ABI_VERSION 4
+#define IRSSI_ABI_VERSION 5
 
 #define DEFAULT_SERVER_ADD_PORT 6667