diff --git a/lua.c b/lua.c
index 2f6f3a9..023f4f8 100644
--- a/lua.c
+++ b/lua.c
@@ -892,7 +892,9 @@ PHP_MINIT_FUNCTION(lua) {
 	REGISTER_LONG_CONSTANT("LUA_ERRRUN", LUA_ERRRUN, CONST_PERSISTENT | CONST_CS);
 	REGISTER_LONG_CONSTANT("LUA_ERRSYNTAX", LUA_ERRSYNTAX, CONST_PERSISTENT | CONST_CS);
 	REGISTER_LONG_CONSTANT("LUA_ERRMEM", LUA_ERRMEM, CONST_PERSISTENT | CONST_CS);
+#ifdef LUA_ERRGCMM
 	REGISTER_LONG_CONSTANT("LUA_ERRGCMM", LUA_ERRGCMM, CONST_PERSISTENT | CONST_CS);
+#endif
 	REGISTER_LONG_CONSTANT("LUA_ERRERR", LUA_ERRERR, CONST_PERSISTENT | CONST_CS);
 	REGISTER_LONG_CONSTANT("LUA_ERRFILE", LUA_ERRFILE, CONST_PERSISTENT | CONST_CS);
 
diff --git a/php_lua.h b/php_lua.h
index d8a6f63..0370014 100644
--- a/php_lua.h
+++ b/php_lua.h
@@ -27,7 +27,7 @@
 /* LUA_OK is defined sinc 5.2 */
 #ifndef LUA_OK
 #define LUA_OK 0
-#define
+#endif
 
 extern zend_module_entry lua_module_entry;
 #define phpext_lua_ptr &lua_module_entry