diff --git a/libretro.h b/libretro.h
index 9f70e37e5a..323493317b 100755
--- a/libretro.h
+++ b/libretro.h
@@ -635,6 +635,7 @@ struct retro_perf_callback
 #define retro_get_perf_counter_func_exists 1
 #else
 #define retro_perf_register_func perf_register_cb
+#define retro_perf_register_func_exists retro_perf_register_func
 #define retro_get_perf_counter_func perf_get_counter_cb
 #define retro_get_perf_counter_func_exists retro_get_perf_counter_func
 #endif