diff --git a/mangle/image.py b/mangle/image.py
index 3b91425..0b5ea36 100644
--- a/mangle/image.py
+++ b/mangle/image.py
@@ -191,12 +191,11 @@ def orientImage(image, size):
 # by inverting colors, and asking a bounder box ^^
 @protect_bad_image
 def autoCropImage(image):
-    w, h = image.size
     try:
         x0, y0, xend, yend = ImageChops.invert(image).getbbox()
     except TypeError: # bad image, specific to chops
         return image
-    image = image.crop((0, y0, w, yend))
+    image = image.crop((x0, y0, xend, yend))
 
     return image