diff --git a/include/types.h b/include/types.h
index d685255b..b76e75ab 100644
--- a/include/types.h
+++ b/include/types.h
@@ -28,7 +28,7 @@
  *  types.h: Empire types
  * 
  *  Known contributors to this file:
- *     Markus Armbruster, 2006
+ *     Markus Armbruster, 2006-2007
  */
 
 #ifndef TYPES_H
diff --git a/src/lib/commands/marc.c b/src/lib/commands/marc.c
index c9083843..bd8c639d 100644
--- a/src/lib/commands/marc.c
+++ b/src/lib/commands/marc.c
@@ -30,6 +30,7 @@
  *  Known contributors to this file:
  *     Thomas Ruschak
  *     Ken Stevens, 1995 (rewrite)
+ *     Ron Koenderink, 2006-2007
  */
 
 #include <config.h>
diff --git a/src/lib/commands/navi.c b/src/lib/commands/navi.c
index f393e855..f1715105 100644
--- a/src/lib/commands/navi.c
+++ b/src/lib/commands/navi.c
@@ -29,6 +29,7 @@
  * 
  *  Known contributors to this file:
  *     Ken Stevens, 1995 (rewritten)
+ *     Ron Koenderink, 2006-2007
  */
 
 #include <config.h>
diff --git a/src/lib/commands/rada.c b/src/lib/commands/rada.c
index 22837345..7e57c4f9 100644
--- a/src/lib/commands/rada.c
+++ b/src/lib/commands/rada.c
@@ -28,7 +28,7 @@
  *  rada.c: Do radar from a ship/unit/sector
  * 
  *  Known contributors to this file:
- *     
+ *     Ron Koenderink, 2006
  */
 
 #include <config.h>
diff --git a/src/lib/common/file.c b/src/lib/common/file.c
index 3200da6f..20b38e69 100644
--- a/src/lib/common/file.c
+++ b/src/lib/common/file.c
@@ -30,7 +30,7 @@
  *  Known contributors to this file:
  *     Dave Pare, 1989
  *     Steve McClure, 2000
- *     Markus Armbruster, 2005
+ *     Markus Armbruster, 2005-2006
  */
 
 #include <config.h>
diff --git a/src/lib/common/maps.c b/src/lib/common/maps.c
index 9b028e90..29d0d702 100644
--- a/src/lib/common/maps.c
+++ b/src/lib/common/maps.c
@@ -30,6 +30,7 @@
  *  Known contributors to this file:
  *     Ken Stevens, 1995
  *     Steve McClure, 1998
+ *     Ron Koenderink, 2006
  */
 
 #include <config.h>