diff --git a/python/iridium_extractor_flowgraph.py b/python/iridium_extractor_flowgraph.py
index a6b87af..6d84482 100644
--- a/python/iridium_extractor_flowgraph.py
+++ b/python/iridium_extractor_flowgraph.py
@@ -6,7 +6,6 @@
 from gnuradio import blocks
 import gnuradio.filter
 
-import scipy.signal
 import numpy as np
 
 import sys