--- a/xpcom/tests/TestArguments.cpp
+++ b/xpcom/tests/TestArguments.cpp
@@ -13,13 +13,13 @@ int main(int argc, char* argv[]) {
   if (strcmp("seamonkey", argv[4]) != 0)
       return 4;
   if (strcmp("foo", argv[5]) != 0)
       return 5;
   if (strcmp("bar", argv[6]) != 0)
       return 6;
   if (strcmp("argument with spaces", argv[7]) != 0)
       return 7;
-  if (strcmp("\"argument with quotes\"", argv[8]) != 0)
+  if (strcmp(R"("argument with quotes")", argv[8]) != 0)
       return 8;
   
   return 0;
 }