diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 12b5996..e085fcf 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -2152,7 +2152,7 @@
  * @tim_len: length of the TIM IE
  * @aid: the AID to look for
  */
-static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
+static inline bool ieee80211_check_tim(const struct ieee80211_tim_ie *tim,
 				       u8 tim_len, u16 aid)
 {
 	u8 mask;