diff --git a/src/lib/commands/shut.c b/src/lib/commands/shut.c
index 2a21e190..067c36d2 100644
--- a/src/lib/commands/shut.c
+++ b/src/lib/commands/shut.c
@@ -29,6 +29,7 @@
  * 
  *  Known contributors to this file:
  *     Ken Stevens, 1995
+ *     Markus Armbruster, 2007
  */
 
 #include <config.h>
diff --git a/src/lib/update/land.c b/src/lib/update/land.c
index eb9fbc60..331a4436 100644
--- a/src/lib/update/land.c
+++ b/src/lib/update/land.c
@@ -31,7 +31,7 @@
  *     Dave Pare, 1986
  *     Thomas Ruschak, 1992
  *     Steve McClure, 1996
- *     Markus Armbruster, 2006
+ *     Markus Armbruster, 2006-2007
  */
 
 #include <config.h>
diff --git a/src/lib/update/plane.c b/src/lib/update/plane.c
index de7324c9..6de7ef2d 100644
--- a/src/lib/update/plane.c
+++ b/src/lib/update/plane.c
@@ -30,7 +30,7 @@
  *  Known contributors to this file:
  *     Dave Pare, 1986
  *     Steve McClure, 1998
- *     Markus Armbruster, 2006
+ *     Markus Armbruster, 2006-2007
  */
 
 #include <config.h>
diff --git a/src/lib/update/ship.c b/src/lib/update/ship.c
index 92a938f9..85889adc 100644
--- a/src/lib/update/ship.c
+++ b/src/lib/update/ship.c
@@ -31,7 +31,7 @@
  *     Dave Pare, 1986
  *     Steve McClure, 1996
  *     Ron Koenderink, 2004
- *     Markus Armbruster, 2006
+ *     Markus Armbruster, 2006-2007
  */
 
 #include <config.h>
diff --git a/src/server/shutdown.c b/src/server/shutdown.c
index 1086b1c6..35e259bf 100644
--- a/src/server/shutdown.c
+++ b/src/server/shutdown.c
@@ -29,6 +29,7 @@
  * 
  *  Known contributors to this file:
  *     Ken Stevens, 1995
+ *     Markus Armbruster, 2007
  */
 
 #include <config.h>