--- a/toolkit/crashreporter/nsExceptionHandler.cpp
+++ b/toolkit/crashreporter/nsExceptionHandler.cpp
@@ -3613,17 +3613,17 @@ OOPDeinit()
   crashServer = nullptr;
 
   delete dumpMapLock;
   dumpMapLock = nullptr;
 
   delete pidToMinidump;
   pidToMinidump = nullptr;
 
-#if defined(XP_WIN)
+#if defined(XP_WIN) || defined(XP_MACOSX)
   mozilla::SmprintfFree(childCrashNotifyPipe);
   childCrashNotifyPipe = nullptr;
 #endif
 }
 
 #if defined(XP_WIN) || defined(XP_MACOSX)
 // Parent-side API for children
 const char*