diff --git a/modules/lua/lua_request.c b/modules/lua/lua_request.c
index f889c5e591..aad4730ebc 100644
--- a/modules/lua/lua_request.c
+++ b/modules/lua/lua_request.c
@@ -1499,7 +1499,7 @@ static int lua_ap_exists_config_define(lua_State *L)
     luaL_checktype(L, 1, LUA_TSTRING);
     name = lua_tostring(L, 1);
     returnValue = ap_exists_config_define(name);
-    lua_pushinteger(L, returnValue);
+    lua_pushboolean(L, returnValue);
     return 1;
 }