--- a/widget/windows/WinMouseScrollHandler.cpp
+++ b/widget/windows/WinMouseScrollHandler.cpp
@@ -22,17 +22,17 @@
 #include "mozilla/Preferences.h"
 #include "mozilla/WindowsVersion.h"
 
 #include <psapi.h>
 
 namespace mozilla {
 namespace widget {
 
-PRLogModuleInfo* gMouseScrollLog = nullptr;
+LazyLogModule gMouseScrollLog("MouseScrollHandlerWidgets");
 
 static const char* GetBoolName(bool aBool)
 {
   return aBool ? "TRUE" : "FALSE";
 }
 
 MouseScrollHandler* MouseScrollHandler::sInstance = nullptr;
 
@@ -76,19 +76,16 @@ MouseScrollHandler::GetCurrentMessagePos
 
 // Get rid of the GetMessagePos() API.
 #define GetMessagePos()
 
 /* static */
 void
 MouseScrollHandler::Initialize()
 {
-  if (!gMouseScrollLog) {
-    gMouseScrollLog = PR_NewLogModule("MouseScrollHandlerWidgets");
-  }
   Device::Init();
 }
 
 /* static */
 void
 MouseScrollHandler::Shutdown()
 {
   delete sInstance;