diff --git a/src/lua_baselib.c b/src/lua_baselib.c
index 2b31e96f..ae746a1b 100644
--- a/src/lua_baselib.c
+++ b/src/lua_baselib.c
@@ -1906,6 +1906,8 @@ static int lib_sMusicInfo(lua_State *L)
 
 static int lib_sMusicExists(lua_State *L)
 {
+	boolean checkMIDI = lua_opttrueboolean(L, 2);
+	boolean checkDigi = lua_opttrueboolean(L, 3);
 #ifdef MUSICSLOT_COMPATIBILITY
 	const char *music_name;
 	UINT32 music_num;
@@ -1933,8 +1935,6 @@ static int lib_sMusicExists(lua_State *L)
 #else
 	const char *music_name = luaL_checkstring(L, 1);
 #endif
-	boolean checkMIDI = lua_opttrueboolean(L, 2);
-	boolean checkDigi = lua_opttrueboolean(L, 3);
 	NOHUD
 	lua_pushboolean(L, S_MusicExists(music_name, checkMIDI, checkDigi));
 	return 1;