diff --git a/engine/common/sys.h b/engine/common/sys.h
index 4cea85beb..06d6563f4 100644
--- a/engine/common/sys.h
+++ b/engine/common/sys.h
@@ -68,6 +68,9 @@ void Sys_Sleep (void);
 // called to yield for a little bit so as
 // not to hog cpu when paused or debugging
 
+void Sys_ServerActivity(void);
+//make window flash on the taskbar - someone said something/connected
+
 void Sys_SendKeyEvents (void);
 // Perform Key_Event () callbacks until the input que is empty