--- a/bindings/lua/luars232.c
+++ b/bindings/lua/luars232.c
@@ -529,7 +529,7 @@ static void create_metatables(lua_State *L, const char *name, const luaL_reg *me
 #endif
 }
 
-RS232_LIB int luaopen_luars232(lua_State *L)
+RS232_LIB static int luaopen_luars232(lua_State *L)
 {
 	int i;
 	create_metatables(L, MODULE_NAMESPACE, port_methods);
@@ -560,6 +560,7 @@ RS232_LIB int luaopen_luars232(lua_State *L)
 	return 1;
 }
 
-RS232_LIB int luaopen_rs232_core(lua_State *L){
+__attribute__((unused))
+RS232_LIB static int luaopen_rs232_core(lua_State *L){
 	return luaopen_luars232(L);
 }
--- a/include/librs232/rs232.h
+++ b/include/librs232/rs232.h
@@ -134,7 +134,7 @@ enum rs232_flow_e {
 
 enum rs232_status_e {
 	RS232_PORT_CLOSED,
-	RS232_PORT_OPEN,
+	RS232_PORT_OPEN
 };
 
 enum rs232_dtr_e {