diff --git a/package/kernel/mac80211/patches/300-pending_work.patch b/package/kernel/mac80211/patches/300-pending_work.patch
index 5ca87b7664..60a06c60ff 100644
--- a/package/kernel/mac80211/patches/300-pending_work.patch
+++ b/package/kernel/mac80211/patches/300-pending_work.patch
@@ -4758,7 +4758,7 @@
  
  	nsecs += minstrel_mcs_groups[group].duration[rate];
 -	tp = 1000000 * ((mr->probability * 1000) / nsecs);
-+	tp = 1000000 * (prob * 1000) / nsecs;
++	tp = 1000000 * ((prob * 1000) / nsecs);
  
  	mr->cur_tp = MINSTREL_TRUNC(tp);
  }