diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 33cebb804a..e56f55126a 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -21767,7 +21767,7 @@ static int local_attended_transfer(struct sip_pvt *transferer, struct sip_dual *
 
 		ast_do_masquerade(target.chan1);
 
-		ast_channel_lock(transferer); /* the transferer pvt is expected to remain locked on return */
+		sip_pvt_lock(transferer); /* the transferer pvt is expected to remain locked on return */
 
 		ast_indicate(target.chan1, AST_CONTROL_UNHOLD);