--- a/hal/HalWakeLock.cpp
+++ b/hal/HalWakeLock.cpp
@@ -248,17 +248,17 @@ ModifyWakeLock(const nsAString& aTopic,
   }
   if (!totalCount.numLocks) {
     sLockTable->Remove(aTopic);
   }
 
   if (sActiveListeners &&
       (oldState != ComputeWakeLockState(totalCount.numLocks,
                                         totalCount.numHidden) ||
-       processWasLocked != processCount.numLocks > 0)) {
+       processWasLocked != (processCount.numLocks > 0))) {
 
     WakeLockInformation info;
     GetWakeLockInfo(aTopic, &info);
     NotifyWakeLockChange(info);
   }
 }
 
 void