diff --git a/compiler-rt/lib/tsan/rtl/tsan_rtl.cc b/compiler-rt/lib/tsan/rtl/tsan_rtl.cc
index 8c7567489fd8..27e4077113c9 100644
--- a/compiler-rt/lib/tsan/rtl/tsan_rtl.cc
+++ b/compiler-rt/lib/tsan/rtl/tsan_rtl.cc
@@ -331,11 +331,11 @@ static inline bool BothReads(Shadow s, int kAccessIsWrite) {
   return !kAccessIsWrite && !s.is_write();
 }
 
-static inline bool OldIsRWStronger(Shadow old, int kAccessIsWrite) {
+static inline bool OldIsRWNotWeaker(Shadow old, int kAccessIsWrite) {
   return old.is_write() || !kAccessIsWrite;
 }
 
-static inline bool OldIsRWWeaker(Shadow old, int kAccessIsWrite) {
+static inline bool OldIsRWWeakerOrEqual(Shadow old, int kAccessIsWrite) {
   return !old.is_write() || kAccessIsWrite;
 }
 
diff --git a/compiler-rt/lib/tsan/rtl/tsan_update_shadow_word_inl.h b/compiler-rt/lib/tsan/rtl/tsan_update_shadow_word_inl.h
index c7864ce00af3..2c435556abb2 100644
--- a/compiler-rt/lib/tsan/rtl/tsan_update_shadow_word_inl.h
+++ b/compiler-rt/lib/tsan/rtl/tsan_update_shadow_word_inl.h
@@ -34,7 +34,7 @@ do {
     if (Shadow::TidsAreEqual(old, cur)) {
       StatInc(thr, StatShadowSameThread);
       if (OldIsInSameSynchEpoch(old, thr)) {
-        if (OldIsRWStronger(old, kAccessIsWrite)) {
+        if (OldIsRWNotWeaker(old, kAccessIsWrite)) {
           // found a slot that holds effectively the same info
           // (that is, same tid, same sync epoch and same size)
           StatInc(thr, StatMopSame);
@@ -43,7 +43,7 @@ do {
         StoreIfNotYetStored(sp, &store_word);
         break;
       }
-      if (OldIsRWWeaker(old, kAccessIsWrite))
+      if (OldIsRWWeakerOrEqual(old, kAccessIsWrite))
         StoreIfNotYetStored(sp, &store_word);
       break;
     }