diff --git a/recv.py b/recv.py
index 7847496..df84cd3 100644
--- a/recv.py
+++ b/recv.py
@@ -129,7 +129,6 @@ def constellation(y):
 def main(fname):
 
     _, x = load(fname)
-    x = x - np.mean(x)
     result = detect(x, Fc)
     if result is None:
         log.info('No carrier detected')