diff --git a/res/res_agi.c b/res/res_agi.c
index d1218e2881..3a8b256b62 100644
--- a/res/res_agi.c
+++ b/res/res_agi.c
@@ -117,7 +117,7 @@ static void agi_debug_cli(int fd, char *fmt, ...)
 	} else {
 		if (agidebug)
 			ast_verbose("AGI Tx >> %s", stuff);
-		ast_carefulwrite(fd, stuff, strlen(stuff), 100);
+		ast_carefulwrite(fd, stuff, strlen(stuff), 100, NULL);
 		free(stuff);
 	}
 }