diff --git a/matlab/peak_detect.m b/matlab/peak_detect.m
index 1008fc4..8cee650 100644
--- a/matlab/peak_detect.m
+++ b/matlab/peak_detect.m
@@ -28,7 +28,7 @@ function retval = peak_detect ()
 frames = load ('-ascii', '/home/jens/frames.dat');
 [numFrames, N] = size(frames)
 
-Nh = N/2;
+Nh = N;
 kn = 0.1
 ks = 0.5;