diff --git a/GUI/main.py b/GUI/main.py
index c7dc938..ae39624 100644
--- a/GUI/main.py
+++ b/GUI/main.py
@@ -60,10 +60,7 @@
     if event == 'Save':
         file = sg.popup_get_file(
             'Save image as',
-            save_as=True,
-            file_types=(
-                ('PNG image','*.png*'),
-            )
+            save_as=True
         )
         try:
             old_image.save(file+'.png')
diff --git a/example/accurate.png b/example/accurate.png
index 8d67460..426408f 100644
Binary files a/example/accurate.png and b/example/accurate.png differ
diff --git a/example/fast.png b/example/fast.png
new file mode 100644
index 0000000..449ee9d
Binary files /dev/null and b/example/fast.png differ