diff --git a/mini.cpp b/mini.cpp
index 70c4eda..79a86c6 100644
--- a/mini.cpp
+++ b/mini.cpp
@@ -28,8 +28,8 @@ uint8_t     screen_zoom = 4;
 bool        screen_fullscreen = false;
 bool        screen_cursor = true;
 
-int         windowpos_x = SDL_WINDOWPOS_UNDEFINED;
-int         windowpos_y = SDL_WINDOWPOS_UNDEFINED;
+int         desktop_width = 0;
+int         desktop_height = 0;
 
 surface_t   surfaces[10];
 surface_t   *screen_surface = &surfaces[0];
@@ -226,14 +226,17 @@ void setmap(uint8_t surface) {
 }
 
 void createDisplay() {
-    mini_win = SDL_CreateWindow(window_title, windowpos_x, windowpos_y, screen_width*screen_zoom, screen_height*screen_zoom, screen_fullscreen?SDL_WINDOW_FULLSCREEN_DESKTOP:SDL_WINDOW_SHOWN);
+    if (screen_zoom <= 0) screen_zoom = 1;
+    while (screen_width*screen_zoom > desktop_width || screen_height*screen_zoom > desktop_height) screen_zoom--;
+
+    mini_win = SDL_CreateWindow(window_title, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, screen_width*screen_zoom, screen_height*screen_zoom, screen_fullscreen?SDL_WINDOW_FULLSCREEN_DESKTOP:SDL_WINDOW_SHOWN);
     windowID = SDL_GetWindowID(mini_win);
     mini_ren = SDL_CreateRenderer(mini_win, -1, 0);
     //SDL_CreateWindowAndRenderer(512,512,0,&mini_win,&mini_ren);
     SDL_RenderSetLogicalSize(mini_ren, screen_width, screen_height);
     SDL_ShowCursor(screen_cursor?SDL_ENABLE:SDL_DISABLE);
     mini_bak = SDL_CreateTexture(mini_ren, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, screen_width, screen_height);
-    SDL_GetWindowPosition(mini_win, &windowpos_x, &windowpos_y);
+    //SDL_GetWindowPosition(mini_win, &windowpos_x, &windowpos_y);
 }
 
 void destroyDisplay() {
@@ -288,6 +291,16 @@ int main(int argc,char*argv[]){
         setdest(newsurf(screen_width, screen_height));
 
         SDL_Init(SDL_INIT_EVERYTHING);
+
+        SDL_DisplayMode dm;
+        if (SDL_GetDesktopDisplayMode(0, &dm) != 0)
+        {
+            SDL_Log("SDL_GetDesktopDisplayMode failed: %s", SDL_GetError());
+            return 1;
+        }
+        desktop_width = dm.w;
+        desktop_height = dm.h;
+
         createDisplay();
 
         initGamePad();
@@ -329,7 +342,7 @@ int main(int argc,char*argv[]){
                     }
 */
 #ifdef DEBUG
-                    if (mini_eve.key.keysym.scancode == SDL_SCANCODE_F1) {
+                    if (mini_eve.key.keysym.scancode == SDL_SCANCODE_F12) {
                         if (lua_is_playing()) {
                             lua_quit();
                             quitaudio();
@@ -355,13 +368,13 @@ int main(int argc,char*argv[]){
                 if (mini_eve.type == SDL_CONTROLLERBUTTONDOWN) {
                     pad_just_pressed = mini_eve.cbutton.button;
                 }
-                if ( (mini_eve.type == SDL_WINDOWEVENT) &&
+                /*if ( (mini_eve.type == SDL_WINDOWEVENT) &&
                      (mini_eve.window.windowID == windowID) &&
                      (mini_eve.window.event == SDL_WINDOWEVENT_MOVED) ) {
                     windowpos_x = mini_eve.window.data1-4;
                     windowpos_y = mini_eve.window.data2-36;
                     //SDL_GetWindowPosition(mini_win, &windowpos_x, &windowpos_y);
-                }
+                }*/
             }
             keys = SDL_GetKeyboardState(NULL);
             mouse_buttons = SDL_GetMouseState(&mouse_x, &mouse_y);