diff --git a/channels/chan_agent.c b/channels/chan_agent.c
index 0b15903419..3451de2206 100644
--- a/channels/chan_agent.c
+++ b/channels/chan_agent.c
@@ -2298,7 +2298,9 @@ static int function_agent(struct ast_channel *chan, const char *cmd, char *data,
 		} 
 	} else if (!strcasecmp(args.item, "fullchannel")) {
 		if (agent->chan) {
+			ast_channel_lock(agent->chan);
 			ast_copy_string(buf, agent->chan->name, len);
+			ast_channel_unlock(agent->chan);
 		} 
 	} else if (!strcasecmp(args.item, "exten")) {
 		buf[0] = '\0';