--- a/src/main.hxx
+++ b/src/main.hxx
@@ -23,11 +23,10 @@
 
 extern std::string g_configfilename;
 extern std::string g_datadir;
+extern bool g_enableL16;
 class ConfSimple;
 extern std::mutex g_configlock;
 extern ConfSimple *g_config;
-extern std::string g_protocolInfo;
-extern std::unordered_set<std::string> g_supportedFormats;
 
 typedef struct ohInfoDesc {
     std::string name;