Index: channels/chan_iax2.c
===================================================================
--- channels/chan_iax2.c	(revision 79987)
+++ channels/chan_iax2.c	(working copy)
@@ -9549,7 +9630,7 @@
 
 	if (!ast_strlen_zero(peer->mailbox)) {
 		char *mailbox, *context;
-		mailbox = ast_strdupa(peer->mailbox);
+		context = mailbox = ast_strdupa(peer->mailbox);
 		strsep(&context, "@");
 		if (ast_strlen_zero(context))
 			context = "default";