diff --git a/oxdbarchive/tools/extract_timeline.py b/oxdbarchive/tools/extract_timeline.py
index 9d134a1..5a8960e 100755
--- a/oxdbarchive/tools/extract_timeline.py
+++ b/oxdbarchive/tools/extract_timeline.py
@@ -96,7 +96,7 @@ class GstTimeline:
     img = Image.fromstring('RGB',input_d, gst_buffer)
     img = img.resize((1, bar_height), Image.ANTIALIAS)
     self.frames += 1
-    for i in range(height):
+    for i in range(bar_height):
       self.bar.putpixel((self.frames, i), img.getpixel((0,i)))
     if self.frames >= self.width_part and self.frames > 30:
       self.cropAndSave()