diff --git a/ReadMe.md b/ReadMe.md
index d50046ad..fd4562c1 100644
--- a/ReadMe.md
+++ b/ReadMe.md
@@ -198,8 +198,8 @@ let me know if I missed you!
 - Martin R has provided substantial help reviewing and improving the
   User Guide and Applications documents.
 
-- Mark Pruden has also contributed a great deal of content to the User
-  Guide as well as the COPYSL utility.
+- Mark Pruden has also contributed a great deal of content to the
+  Disk Catalog, User Guide as well as the COPYSL utility.
 
 - Jacques Pelletier has contributed the DS1501 RTC driver code.
 
diff --git a/ReadMe.txt b/ReadMe.txt
index bb346da5..5b1d8eee 100644
--- a/ReadMe.txt
+++ b/ReadMe.txt
@@ -188,8 +188,8 @@ let me know if I missed you!
 -   Martin R has provided substantial help reviewing and improving the
     User Guide and Applications documents.
 
--   Mark Pruden has also contributed a great deal of content to the User
-    Guide as well as the COPYSL utility.
+-   Mark Pruden has also contributed a great deal of content to the
+    Disk Catalog, User Guide as well as the COPYSL utility.
 
 -   Jacques Pelletier has contributed the DS1501 RTC driver code.
 
diff --git a/Source/Doc/ReadMe.md b/Source/Doc/ReadMe.md
index 8c08dfc2..eb5c19b7 100644
--- a/Source/Doc/ReadMe.md
+++ b/Source/Doc/ReadMe.md
@@ -190,7 +190,7 @@ please let me know if I missed you!
   User Guide and Applications documents.
   
 * Mark Pruden has also contributed a great deal of content to the
-  User Guide as well as the COPYSL utility.
+  Disk Catalog, User Guide as well as the COPYSL utility.
 
 * Jacques Pelletier has contributed the DS1501 RTC driver code.
 
diff --git a/Source/Doc/UserGuide.md b/Source/Doc/UserGuide.md
index 2b6dd613..755022a9 100644
--- a/Source/Doc/UserGuide.md
+++ b/Source/Doc/UserGuide.md
@@ -4464,7 +4464,7 @@ please let me know if I missed you!
   User Guide and Applications documents.
   
 * Mark Pruden has also contributed a great deal of content to the
-  User Guide as well as the COPYSL utility.
+  Disk Catalog, User Guide as well as the COPYSL utility.
 
 * Jacques Pelletier has contributed the DS1501 RTC driver code.