diff --git a/src/fileformats.c b/src/fileformats.c
index a8e2cf5b..4a454f77 100644
--- a/src/fileformats.c
+++ b/src/fileformats.c
@@ -4087,18 +4087,14 @@ void Load_GIF(T_IO_Context * context)
         Original_screen_X=LSDB.Width;
         Original_screen_Y=LSDB.Height;
 
-        switch(LSDB.Aspect) {
-        case 17:  // (17 + 15) / 64 = 1:2
-          ratio=PIXEL_TALL;
-          break;
-        case 33:  // (33 + 15) / 64 = 3:4
-          ratio=PIXEL_TALL3;
-          break;
-        case 113: // (113 + 15) / 64 = 2:1
-          ratio=PIXEL_WIDE;
-          break;
-        default:
-          ratio=PIXEL_SIMPLE;
+        ratio=PIXEL_SIMPLE;          //  (49 + 15) / 64 = 1:1
+        if (LSDB.Aspect != 0) {
+          if (LSDB.Aspect < 25)      //  (17 + 15) / 64 = 1:2
+            ratio=PIXEL_TALL;
+          else if (LSDB.Aspect < 41) //  (33 + 15) / 64 = 3:4
+            ratio=PIXEL_TALL3;
+          else if (LSDB.Aspect > 82) // (113 + 15) / 64 = 2:1
+            ratio=PIXEL_WIDE;
         }
 
         Pre_load(context, LSDB.Width,LSDB.Height,file_size,FORMAT_GIF,ratio,(LSDB.Resol&7)+1);