diff --git a/drivers/staging/rtl8821ae/btcoexist/halbtcoutsrc.c b/drivers/staging/rtl8821ae/btcoexist/halbtcoutsrc.c
index 1152fc8683a09ee5f0122e0ec7f41e082a47d7f5..c4e83773ec982d62dd5ac960312017999db38919 100644
--- a/drivers/staging/rtl8821ae/btcoexist/halbtcoutsrc.c
+++ b/drivers/staging/rtl8821ae/btcoexist/halbtcoutsrc.c
@@ -1077,7 +1077,7 @@ void exhalbtc_dbg_control(struct btc_coexist *btcoexist,
 	btcoexist->statistics.cnt_dbg_ctrl++;
 }
 
-void exhalbtc_stack_update_profile_info()
+void exhalbtc_stack_update_profile_info(void)
 {
 }