diff --git a/src/content/mods.h b/src/content/mods.h
index 228684c6e..6597eaeae 100644
--- a/src/content/mods.h
+++ b/src/content/mods.h
@@ -49,6 +49,7 @@ struct ModSpec
 	std::unordered_set<std::string> optdepends;
 	std::unordered_set<std::string> unsatisfied_depends;
 
+	bool valid = true;  /// False if incomplete
 	bool part_of_modpack = false;
 	bool is_modpack = false;
 
diff --git a/src/script/common/c_content.cpp b/src/script/common/c_content.cpp
index 6f7d86447..c22ed121d 100644
--- a/src/script/common/c_content.cpp
+++ b/src/script/common/c_content.cpp
@@ -2576,4 +2576,7 @@ void push_mod_spec(lua_State *L, const ModSpec &spec, bool include_unsatisfied)
 		lua_rawseti(L, -2, i++);
 	}
 	lua_setfield(L, -2, "unsatisfied_depends");
+
+	lua_pushboolean(L, spec.valid);
+	lua_setfield(L, -2, "valid");
 }
diff --git a/src/script/lua_api/l_mainmenu.cpp b/src/script/lua_api/l_mainmenu.cpp
index acc600a6c..e8246c15d 100644
--- a/src/script/lua_api/l_mainmenu.cpp
+++ b/src/script/lua_api/l_mainmenu.cpp
@@ -450,10 +450,7 @@ int ModApiMainMenu::l_check_mod_configuration(lua_State *L)
 		spec.name = fs::GetFilenameFromPath(modpath.c_str());
 		spec.path = modpath;
 		spec.virtual_path = virtual_path;
-		if (!parseModContents(spec)) {
-			warningstream << "Mod \"" << spec.name
-				<< "\" has no \"init.lua\" or \"modpack.conf\"" << std::endl;
-		}
+		spec.valid = parseModContents(spec);
 	}
 
 	modmgr.addMods(modSpecs);