diff --git a/compiler/res/prog8lib/c64/graphics.p8 b/compiler/res/prog8lib/c64/graphics.p8
index 90c22073d..5c8f9bda2 100644
--- a/compiler/res/prog8lib/c64/graphics.p8
+++ b/compiler/res/prog8lib/c64/graphics.p8
@@ -12,7 +12,7 @@ graphics {
 
     sub enable_bitmap_mode() {
         ; enable bitmap screen, erase it and set colors to black/white.
-        c64.SCROLY = %00111000
+        c64.SCROLY = %00111011
         c64.SCROLX = %00001000
         c64.VMCSB = (c64.VMCSB & %11110000) | %00001000   ; $2000-$3fff
         clear_screen(1, 0)
@@ -20,7 +20,7 @@ graphics {
 
     sub disable_bitmap_mode() {
         ; enables text mode, erase the text screen, color white
-        c64.SCROLY = %00011000
+        c64.SCROLY = %00011011
         c64.SCROLX = %00001000
         c64.VMCSB = (c64.VMCSB & %11110000) | %00000100   ; $1000-$2fff
         txt.fill_screen(' ', 1)
diff --git a/examples/mandelbrot-gfx.p8 b/examples/mandelbrot-gfx.p8
index d0cc253bf..e346c7a1e 100644
--- a/examples/mandelbrot-gfx.p8
+++ b/examples/mandelbrot-gfx.p8
@@ -45,6 +45,7 @@ main {
             }
         }
 
+        ; graphics.disable_bitmap_mode()
         ; test_stack.test()
 
         repeat {