diff --git a/oximage/imagetools.py b/oximage/imagetools.py
index f5b3849..dcdcab6 100644
--- a/oximage/imagetools.py
+++ b/oximage/imagetools.py
@@ -30,7 +30,7 @@ def render_list_icon(options):
             top = int((frame_image.size[1] - frame_height) / 2)
             frame_image = frame_image.crop((0, top, frame_width_, top + frame_height))
         icon_image.paste(frame_image, (i % 3 * frame_width + (1 if i % 2 == 2 else 0), int(i / 3) * frame_height))
-    mask_image = Image.open('icon.mask.png')
+    mask_image = Image.open(ox.path.join(data_root, 'icon.mask.png'))
     mask_image = mask_image.resize((icon_width, icon_height))
     icon_image.putalpha(mask_image)
     icon_image.save(options['icon'])
@@ -58,7 +58,7 @@ def render_movie_icon(options):
     timeline_image = Image.open(options['timeline'])
     timeline_image = timeline_image.resize((icon_width, 64), Image.ANTIALIAS)
     icon_image.paste(timeline_image, (0, icon_height - 64))
-    mask_image = Image.open('icon.mask.png')
+    mask_image = Image.open(ox.path.join(data_root, 'icon.mask.png'))
     mask_image = mask_image.resize((icon_width, icon_height))
     icon_image.putalpha(mask_image)
     icon_image.save(options['icon'])