diff --git a/src/emucore/Console.cxx b/src/emucore/Console.cxx
index 0977386af..b18cf0098 100644
--- a/src/emucore/Console.cxx
+++ b/src/emucore/Console.cxx
@@ -290,7 +290,7 @@ string Console::formatFromFilename() const
   {
     try
     {
-      std::regex rgx(Pattern[i][0]);
+      std::regex rgx(Pattern[i][0], std::regex_constants::icase);
       if(std::regex_search(filename, rgx))
         return Pattern[i][1];
     }