diff --git a/src/pc.c b/src/pc.c
index 07395a7..b69ecdb 100644
--- a/src/pc.c
+++ b/src/pc.c
@@ -639,6 +639,7 @@ void loadconfig(char *fn)
         else   strcpy(iso_path, "");
         
         vid_resize = config_get_int(NULL, "vid_resize", 0);
+        video_force_aspect_ration = config_get_int(NULL, "vid_force_aspect_ratio", 0);
         vid_api = config_get_int(NULL, "vid_api", 0);
         video_fullscreen_scale = config_get_int(NULL, "video_fullscreen_scale", 0);
         video_fullscreen_first = config_get_int(NULL, "video_fullscreen_first", 1);
@@ -741,6 +742,7 @@ void saveconfig()
         config_set_int(NULL, "cdrom_channel", cdrom_channel);
         config_set_string(NULL, "cdrom_path", iso_path);
         config_set_int(NULL, "vid_resize", vid_resize);
+        config_set_int(NULL, "vid_force_aspect_ratio", video_force_aspect_ration);
         config_set_int(NULL, "vid_api", vid_api);
         config_set_int(NULL, "video_fullscreen_scale", video_fullscreen_scale);
         config_set_int(NULL, "video_fullscreen_first", video_fullscreen_first);
diff --git a/src/pc.rc b/src/pc.rc
index bcd1cf2..5aaf68d 100644
--- a/src/pc.rc
+++ b/src/pc.rc
@@ -36,6 +36,7 @@ BEGIN
                 POPUP "&Video"
                 BEGIN
                         MENUITEM "&Resizeable window",IDM_VID_RESIZE
+                        MENUITEM "Force 4:3 &aspect ration",IDM_VID_ASPECT
                         MENUITEM "Remember size && position",IDM_VID_REMEMBER
                         MENUITEM SEPARATOR
                         MENUITEM "&DirectDraw", IDM_VID_DDRAW
diff --git a/src/resources.h b/src/resources.h
index 1fa1217..55b485e 100644
--- a/src/resources.h
+++ b/src/resources.h
@@ -14,6 +14,7 @@
 #define IDM_STATUS         40030
 #define IDM_VID_RESIZE     40050
 #define IDM_VID_REMEMBER   40051
+#define IDM_VID_ASPECT     40052
 #define IDM_VID_DDRAW      40060
 #define IDM_VID_D3D        40061
 #define IDM_VID_FULLSCREEN 40070
diff --git a/src/video.c b/src/video.c
index d18aab6..30b6c9e 100644
--- a/src/video.c
+++ b/src/video.c
@@ -156,6 +156,7 @@ int video_get_video_from_internal_name(char *s)
 }
 
 int video_fullscreen = 0, video_fullscreen_scale, video_fullscreen_first;
+int video_force_aspect_ration = 0;
 uint32_t *video_15to32, *video_16to32;
 
 int egareads=0,egawrites=0;
diff --git a/src/video.h b/src/video.h
index 6d71cb5..72b38c1 100644
--- a/src/video.h
+++ b/src/video.h
@@ -40,6 +40,7 @@ char *video_get_internal_name(int card);
 int video_get_video_from_internal_name(char *s);
 
 extern int video_fullscreen, video_fullscreen_scale, video_fullscreen_first;
+extern int video_force_aspect_ration;
 
 enum
 {
diff --git a/src/win.c b/src/win.c
index bd4b865..690f42d 100644
--- a/src/win.c
+++ b/src/win.c
@@ -124,6 +124,16 @@ void updatewindowsize(int x, int y)
 {
         if (vid_resize) return;
 
+        if (video_force_aspect_ration)
+        {
+                float aspect = (float)x / (float)y;
+                
+                if (aspect > 1.33)
+                        y = (x * 3) / 4;
+                else
+                        x = (y * 4) / 3;
+        }
+        
         winsizex=x; winsizey=y;
         win_doresize = 1;
 }
@@ -579,6 +589,8 @@ int WINAPI WinMain (HINSTANCE hThisInstance,
 			CheckMenuItem(menu, IDM_CDROM_REAL + cdrom_drive, MF_CHECKED);
 	}  
         if (vid_resize) CheckMenuItem(menu, IDM_VID_RESIZE, MF_CHECKED);
+        if (video_force_aspect_ration)
+                CheckMenuItem(menu, IDM_VID_ASPECT, MF_CHECKED);
         CheckMenuItem(menu, IDM_VID_DDRAW + vid_api, MF_CHECKED);
         CheckMenuItem(menu, IDM_VID_FS_FULL + video_fullscreen_scale, MF_CHECKED);
         CheckMenuItem(menu, IDM_VID_REMEMBER, window_remember ? MF_CHECKED : MF_UNCHECKED);
@@ -963,6 +975,11 @@ LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM
                         SetWindowPos(hwnd, 0, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, SWP_NOZORDER | SWP_FRAMECHANGED);
                         saveconfig();
                         break;
+                        case IDM_VID_ASPECT:
+                        video_force_aspect_ration = !video_force_aspect_ration;
+                        CheckMenuItem(hmenu, IDM_VID_ASPECT, video_force_aspect_ration ? MF_CHECKED : MF_UNCHECKED);
+                        saveconfig();
+                        break;
                         case IDM_VID_REMEMBER:
                         window_remember = !window_remember;
                         CheckMenuItem(hmenu, IDM_VID_REMEMBER, window_remember ? MF_CHECKED : MF_UNCHECKED);
@@ -1290,6 +1307,55 @@ LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM
 //                if (key[KEY_ALT] || key[KEY_ALTGR]) return 0;
                 break;
 
+                case WM_SIZING:
+                if (video_force_aspect_ration && vid_resize)
+                {
+                        RECT *r = (RECT *)lParam;                        
+                        int x = r->right - r->left;
+                        int y = r->bottom - r->top;
+                        float aspect = (float)x / (float)y;
+
+                        switch (wParam)
+                        {
+                                case WMSZ_LEFT:
+                                case WMSZ_RIGHT:
+                                r->bottom = r->top + ((x * 3) / 4);
+                                break;
+                                case WMSZ_TOP:
+                                case WMSZ_BOTTOM:
+                                r->right = r->left + ((y * 4) / 3);
+                                break;
+                                
+                                case WMSZ_TOPLEFT:
+                                if (aspect > 1.33)
+                                        r->top = r->bottom - ((x * 3) / 4);
+                                else
+                                        r->left = r->right - ((y * 4) / 3);
+                                break;
+                                case WMSZ_TOPRIGHT:
+                                if (aspect > 1.33)
+                                        r->top = r->bottom - ((x * 3) / 4);
+                                else
+                                        r->right = r->left + ((y * 4) / 3);
+                                break;
+                                case WMSZ_BOTTOMLEFT:
+                                if (aspect > 1.33)
+                                        r->bottom = r->top + ((x * 3) / 4);
+                                else
+                                        r->left = r->right - ((y * 4) / 3);
+                                break;
+                                case WMSZ_BOTTOMRIGHT:
+                                if (aspect > 1.33)
+                                        r->bottom = r->top + ((x * 3) / 4);
+                                else
+                                        r->right = r->left + ((y * 4) / 3);
+                                break;
+                        }
+                        
+                        return TRUE;
+                }
+                break;
+
                 case WM_SIZE:
                 winsizex=lParam&0xFFFF;
                 winsizey=lParam>>16;