--- res_monitor.c~	2007-03-21 12:08:19.000000000 -0700
+++ res_monitor.c	2007-03-21 12:08:19.000000000 -0700
@@ -320,6 +320,7 @@
 		}
 
 		snprintf(chan->monitor->filename_base, FILENAME_MAX, "%s/%s", directory ? "" : ast_config_AST_MONITOR_DIR, fname_base);
+		chan->monitor->filename_changed = 1;
 	} else {
 		ast_log(LOG_WARNING, "Cannot change monitor filename of channel %s to %s, monitoring not started\n", chan->name, fname_base);
 	}