diff --git a/.gitignore b/.gitignore
index 259148f..fcd678b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,3 @@
-# Prerequisites
-*.d
-
 # Compiled Object files
 *.slo
 *.lo
@@ -18,7 +15,6 @@
 
 # Fortran module files
 *.mod
-*.smod
 
 # Compiled Static libraries
 *.lai
@@ -30,3 +26,10 @@
 *.exe
 *.out
 *.app
+
+# Qt project user file
+*.pro.user
+
+# Gettext translation files
+*.po
+*.pot
diff --git a/src/luaenginegui/luaengine/LuaEngineGui.cpp b/src/luaenginegui/luaengine/LuaEngineGui.cpp
index df0aa6e..57a7a21 100644
--- a/src/luaenginegui/luaengine/LuaEngineGui.cpp
+++ b/src/luaenginegui/luaengine/LuaEngineGui.cpp
@@ -34,12 +34,12 @@ LuaEngineGui::LuaEngineGui(QObject *parent, bool loadBaseLibraries) : LuaEngine(
 {
     L = luaState();
     pushClass(L);
-    pushEngine();
+    pushEngine(L);
 }
 
-void LuaEngineGui::pushEngine()
+void LuaEngineGui::pushEngine(lua_State *L_p)
 {
-    pushPointer("__LuaEngineGui", (void*)this);
+    pushPointer(L_p, "__LuaEngineGui", (void*)this);
 }
 
 void LuaEngineGui::pushClass(lua_State *L_p)
diff --git a/src/luaenginegui/luaengine/LuaEngineGui.h b/src/luaenginegui/luaengine/LuaEngineGui.h
index ca5c936..fd5ab5f 100644
--- a/src/luaenginegui/luaengine/LuaEngineGui.h
+++ b/src/luaenginegui/luaengine/LuaEngineGui.h
@@ -28,7 +28,7 @@ class LUAENGINEGUISHARED_EXPORT LuaEngineGui : public LuaEngine
     Q_OBJECT
 public:
     LuaEngineGui(QObject *parent = nullptr, bool loadBaseLibraries = true);
-    void pushEngine();
+    void pushEngine(lua_State *L_p);
     static void pushClass(lua_State *L_p);
     static void pushClass(LuaEngine *luaEngine);
     static int showMessageBox(lua_State *L_p);