diff --git a/gfx2def.ini b/gfx2def.ini
index afd5ffd9..8375b3bb 100644
--- a/gfx2def.ini
+++ b/gfx2def.ini
@@ -181,7 +181,7 @@
   ; Number of pages stored in memory  | Nombre de pages stockées en mémoire
   ; for "undoing".                    | destinées à annuler les dernières
   ; Values are between 1 and 99.      | modifications. Valeurs entre 1 et 99.
-  Undo_pages = 4	; (default 4)
+  Undo_pages = 10	; (default 10)
 
   ; Speed of the scroll-bars (in VBLs | Vitesse des barre de défilement (en
   ; waited) while clicking with the   | VBLs attendus) lorsque l'un des
@@ -349,7 +349,7 @@
   ; Valid values are from 0 to 7 for: Simple, Wide, Tall, Double,
   ; Triple, Wide2, Tall2, Quadruple.
   ;
-  Pixel_ratio = 1; (Default 0)
+  Pixel_ratio = 0; (Default 0)
 
   ; This records the visibility of toolbars, to restore them on start.
   ; It's a bitfield, where 1=Status, 2=Layers, 4=Tools
diff --git a/readini.c b/readini.c
index d81829bd..39e16bb3 100644
--- a/readini.c
+++ b/readini.c
@@ -877,6 +877,10 @@ int Load_INI(T_Config * conf)
         if(Video_mode[0].Width < 4*320 || Video_mode[0].Height < 4*200)
           Pixel_ratio = PIXEL_SIMPLE;
         break;
+      default:
+        // Convert back unknown values to PIXEL_SIMPLE
+        Pixel_ratio = PIXEL_SIMPLE;
+        break;
     }
   }