diff --git a/ofdm/ofdm_rx.m b/ofdm/ofdm_rx.m
index 5703c7a..3b6eb2b 100644
--- a/ofdm/ofdm_rx.m
+++ b/ofdm/ofdm_rx.m
@@ -115,7 +115,7 @@ buf_Z = buffer();
 % --------------------------------------------------------------
 % Main loop
 % --------------------------------------------------------------
-while((fileRemain > fileChunkSize) | (buf_recv.len() > N))	% ToDo: don't leave loop, until file has been consumed.
+while((fileRemain > fileChunkSize) | (buf_recv.len() > 2*N))	% ToDo: don't leave loop, until file has been consumed.
 	
 	if (fileRemain > fileChunkSize)
 		n0 = fileCunkCounter*fileChunkSize+1;