diff --git a/bilby/gw/detector/interferometer.py b/bilby/gw/detector/interferometer.py
index 19816d52ecb8dd654618904a81ede130d4bab6ae..662866e8e7dde3d13a3ff838ecb91643ad177f62 100644
--- a/bilby/gw/detector/interferometer.py
+++ b/bilby/gw/detector/interferometer.py
@@ -607,7 +607,7 @@ class Interferometer(object):
 
         Returns
         =======
-        complex: The matched filter signal to noise ratio 
+        complex: The matched filter signal to noise ratio
 
         """
         return gwutils.matched_filter_snr(