diff --git a/readme.txt b/readme.txt
index daa4973efb367d2432f5973a602a90e390b90305..e11de203c659d5be1a8d451a9a01622bc5fa8e30 100644
--- a/readme.txt
+++ b/readme.txt
@@ -1 +1 @@
-A version of RTKLIB optimized for single and dual frequency low cost GPS receivers, especially u-blox receivers.  It is based on RTKLIB 2.4.3 and is kept reasonably closely synced to that branch.  Documentation for RTKLIB is available at rtklib.com.   This software is provided “AS IS” without any warranties of any kind so please be careful, especially if using it in any kind of real-time application.  Binaries and tutorials for this code, and sample GPS data sets at :                
+A version of RTKLIB optimized for single and dual frequency low cost GPS receivers, especially u-blox receivers.  It is based on RTKLIB 2.4.3 and is kept reasonably closely synced to that branch.  Documentation for RTKLIB is available at rtklib.com.   This software is provided “AS IS” without any warranties of any kind so please be careful, especially if using it in any kind of real-time application.  Binaries and tutorials for this code, and sample GPS data sets at http://rtkexplorer.com/