diff --git a/oxtimelines/timeline.py b/oxtimelines/timeline.py
index 0bc98de..7cfe1b6 100644
--- a/oxtimelines/timeline.py
+++ b/oxtimelines/timeline.py
@@ -57,7 +57,7 @@ class Video(gst.Pipeline):
             self.rate = gst.element_factory_make('videorate')
             self.csp = gst.element_factory_make('ffmpegcolorspace')
             self.vsink = ImageSink(self._video_callback)
-            # self.vsink.connect('frame', self._video_callback)
+            #self.vsink.connect('frame', self._video_callback)
             self.add(
                 self.vqueue, self.scale, self.rate, self.csp, self.vsink
             )
@@ -321,15 +321,15 @@ class Timelines():
         self.frame_offset = 0
         self.videos[0].decode(self.file_points[0])
 
-        #remove tiles that might exist from previous run
+        # remove tiles from previous run
         if not self.points:
             for mode in self.modes:
                 type = 'png' if mode == 'data' else 'jpg'
-                tiles = glob('%s/timeline%s*%d*.%s' % (self.tile_path, mode, self.large_tile_h, type))
+                tiles = glob('%s/timeline%s%dp*.%s' % (self.tile_path, mode, self.large_tile_h, type))
                 for f in ox.sorted_strings(tiles)[self.large_tile_i+2:]:
                     os.unlink(f)
                 if self.render_small_tiles:
-                    tiles = glob('%s/timeline%s*%d*.%s' % (self.tile_path, mode, self.small_tile_h, type))
+                    tiles = glob('%s/timeline%s%dp*.%s' % (self.tile_path, mode, self.small_tile_h, type))
                     for f in ox.sorted_strings(tiles)[self.small_tile_i+2:]:
                         os.unlink(f)