Index: manager.c
===================================================================
--- manager.c	(revision 7849)
+++ manager.c	(working copy)
@@ -1504,7 +1504,7 @@ static int append_event(struct mansessio
 }
 
 /*! \brief  manager_event: Send AMI event to client */
-int manager_event(int category, char *event, char *fmt, ...)
+int manager_event(int category, const char *event, const char *fmt, ...)
 {
 	struct mansession *s;
 	char auth[80];
Index: include/asterisk/manager.h
===================================================================
--- include/asterisk/manager.h	(revision 7849)
+++ include/asterisk/manager.h	(working copy)
@@ -150,7 +150,7 @@ int ast_manager_unregister( char *action
 	\param event	Event name
 	\param contents	Contents of event
 */ 
-extern int manager_event(int category, char *event, char *contents, ...)
+extern int manager_event(int category, const char *event, const char *contents, ...)
 	__attribute__ ((format (printf, 3,4)));
 
 /*! Get header from mananger transaction */