diff --git a/libretro.cpp b/libretro.cpp
index 51f0bcd..743b698 100644
--- a/libretro.cpp
+++ b/libretro.cpp
@@ -55,7 +55,7 @@ MDFNGI *MDFNGameInfo = &EmulatedLynx;
 #define MEDNAFEN_CORE_NAME_MODULE "lynx"
 #define MEDNAFEN_CORE_NAME "Beetle Lynx"
 #define MEDNAFEN_CORE_VERSION "v1.24.0"
-#define MEDNAFEN_CORE_EXTENSIONS "lnx|o"
+#define MEDNAFEN_CORE_EXTENSIONS "lnx|lyx|o"
 #define MEDNAFEN_CORE_TIMING_FPS 75.0
 #define MEDNAFEN_CORE_GEOMETRY_BASE_W 160
 #define MEDNAFEN_CORE_GEOMETRY_BASE_H 102