diff --git a/gfx2.cfg b/gfx2.cfg
index f85ea659..d161b908 100644
Binary files a/gfx2.cfg and b/gfx2.cfg differ
diff --git a/graph.c b/graph.c
index a5930044..e19defa2 100644
--- a/graph.c
+++ b/graph.c
@@ -6580,4 +6580,9 @@ void Tourner_brosse_preview(float Angle)
                                 X2,Y2,Brosse_Largeur-1,               0,
                                 X3,Y3,               0,Brosse_Hauteur-1,
                                 X4,Y4,Brosse_Largeur-1,Brosse_Hauteur-1);
+  Debut_X=Min(Min(X1,X2),Min(X3,X4));
+  Fin_X=Max(Max(X1,X2),Max(X3,X4));
+  Debut_Y=Min(Min(Y1,Y2),Min(Y3,Y4));
+  Fin_Y=Max(Max(Y1,Y2),Max(Y3,Y4));
+  UpdateRect(Debut_X,Debut_Y,Fin_X-Debut_X+1,Fin_Y-Debut_Y+1);
 }
diff --git a/sdlscreen.c b/sdlscreen.c
index 4ede65fd..d171e38f 100644
--- a/sdlscreen.c
+++ b/sdlscreen.c
@@ -40,7 +40,7 @@
   #ifdef __macosx__
     #define METHODE_UPDATE     METHODE_UPDATE_PLEINE_PAGE
   #else
-    #define METHODE_UPDATE     METHODE_UPDATE_MULTI_RECTANGLE
+    #define METHODE_UPDATE     METHODE_UPDATE_PAR_CUMUL
   #endif
 #endif