diff --git a/radio/src/lua.cpp b/radio/src/lua.cpp
index c64f292b0..e58ce95c0 100644
--- a/radio/src/lua.cpp
+++ b/radio/src/lua.cpp
@@ -1142,6 +1142,7 @@ void luaInit()
   lua_registerint(L, "SMLSIZE", SMLSIZE);
   lua_registerint(L, "INVERS", INVERS);
   lua_registerint(L, "PREC1", PREC1);
+  lua_registerint(L, "PREC2", PREC2);
   lua_registerint(L, "BLINK", BLINK);
   lua_registerint(L, "VALUE", 0);
   lua_registerint(L, "SOURCE", 1);