diff --git a/contrib/games/wolf3d/kolibri.cpp b/contrib/games/wolf3d/kolibri.cpp
index 499367e127..6e15b1e22b 100644
--- a/contrib/games/wolf3d/kolibri.cpp
+++ b/contrib/games/wolf3d/kolibri.cpp
@@ -113,6 +113,7 @@ ksys_pos_t _ksys_screen_size()
         "int $0x40"
         :"=a"(size_tmp)
         :"a"(14)
+        :"memory"
     );
     size.x = size_tmp.y;
     size.y = size_tmp.x; 
@@ -206,6 +207,39 @@ void setcwd(char* path){
     asm_inline(
         "int $0x40"
         ::"a"(30), "b"(1), "c"(path)
+        :"memory"
     );
 }
+extern  unsigned screenWidth;
+extern  unsigned screenHeight; 
 
+void kolibri_set_win_max(void){
+    unsigned multip1, multip2;
+    ksys_pos_t screen_size = _ksys_screen_size();
+
+    screen_size.y++;
+    screen_size.x++;
+    
+    multip1 = (screen_size.y)/240;
+    multip2 = (screen_size.y)/200;
+    
+    do{
+        screenWidth =  320 * multip1;
+        screenHeight = 240 * multip1;
+
+        if(screenWidth<=screen_size.x){
+            break;
+        }
+        
+        screenWidth = 320 * multip2;
+        screenHeight = 200 * multip2;
+        
+        if(screenWidth<=screen_size.y){
+            break;
+        }
+        
+        multip1--;
+        multip2--;
+        
+    }while(multip1>0 && multip2>0);
+}
diff --git a/contrib/games/wolf3d/wl_main.cpp b/contrib/games/wolf3d/wl_main.cpp
index 2e828ee3bd..f38f7276eb 100755
--- a/contrib/games/wolf3d/wl_main.cpp
+++ b/contrib/games/wolf3d/wl_main.cpp
@@ -1965,10 +1965,13 @@ void CheckParameters(int argc, char *argv[])
 ==========================
 */
 
+extern void kolibri_set_win_max(void);
+
 int main (int argc, char *argv[])
 {
 #ifdef _KOLIBRI
     setcwd(dirname(argv[0]));
+    kolibri_set_win_max();
 #endif
 
 #if defined(_arch_dreamcast)