diff --git a/LDP/inprogress/Linux-Networking/Protocols-Standards-Services.xml b/LDP/inprogress/Linux-Networking/Protocols-Standards-Services.xml
index 31c625c0..f20c49f9 100644
--- a/LDP/inprogress/Linux-Networking/Protocols-Standards-Services.xml
+++ b/LDP/inprogress/Linux-Networking/Protocols-Standards-Services.xml
@@ -170,7 +170,7 @@ http://lrcwww.epfl.ch
 <title>DDS-Switched56</title>
 
 <para>	
-DDS (Digital Data Service) and Switched 56 are types types of dedicated
+DDS (Digital Data Service) and Switched 56 are types of dedicated
 digital line provided by phone carriers. DDS lines are more
 expensive than dedicated analog lines, but support a more consistent quality.
 DDS lines support a speed of 56 Kbps. A device called a CSU/DSU (Channel