--- a/ipc/mscom/Utils.cpp
+++ b/ipc/mscom/Utils.cpp
@@ -84,17 +84,17 @@ IsValidGUID(REFGUID aCheckGuid)
 uintptr_t
 GetContainingModuleHandle()
 {
   HMODULE thisModule = nullptr;
 #if defined(_MSC_VER)
   thisModule = reinterpret_cast<HMODULE>(&__ImageBase);
 #else
   if (!GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS |
-                         GET_MODULE_HANDLE_EX_UNCHANGED_REFCOUNT,
+                         GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
                          reinterpret_cast<LPCTSTR>(&GetContainingModuleHandle),
                          &thisModule)) {
     return 0;
   }
 #endif
   return reinterpret_cast<uintptr_t>(thisModule);
 }