diff --git a/pydoppler/pydoppler.py b/pydoppler/pydoppler.py
index 6787622..618617f 100755
--- a/pydoppler/pydoppler.py
+++ b/pydoppler/pydoppler.py
@@ -1,9 +1,8 @@
 #! Python PyDoppler
 
-import numpy as np
-import imp
-import matplotlib.pyplot as plt
-import matplotlib.cm as cm
+import numpy as np
+import matplotlib.pyplot as plt
+import matplotlib.cm as cm
 from scipy.signal import savgol_filter
 import sys