--- a/toolkit/xre/CmdLineAndEnvUtils.h
+++ b/toolkit/xre/CmdLineAndEnvUtils.h
@@ -51,17 +51,17 @@ RemoveArg(int& argc, CharT **argv)
   } while (*argv);
 
   --argc;
 }
 
 namespace internal {
 
 template <typename FuncT, typename CharT>
-inline bool
+static inline bool
 strimatch(FuncT aToLowerFn, const CharT* lowerstr, const CharT* mixedstr)
 {
   while(*lowerstr) {
     if (!*mixedstr) return false; // mixedstr is shorter
     if (static_cast<CharT>(aToLowerFn(*mixedstr)) != *lowerstr) return false; // no match
 
     ++lowerstr;
     ++mixedstr;