diff --git a/COPYRIGHT b/COPYRIGHT
index d2b87770a..3f4711a47 100644
--- a/COPYRIGHT
+++ b/COPYRIGHT
@@ -65,7 +65,7 @@ Past contributors include:
  James Michael DuPont, Clark McGrew, Dustin Mitchell, Ian Cooke, Catalin Dumitrescu, Baran
  Kovuk, Oleg Tolmatcev, Tal Shalif, Lluis Padro, Chris Seatory, Igor Bely, Robin Dunn,
  Edward Zimmermann, David Ascher, Dominique Dumont, Pier Giorgio Esposito, Hasan Baran Kovuk,
- Klaus Wiederänders, Richard Beare
+ Klaus Wiederänders, Richard Beare, Hans Oesterholt.
  (See CHANGES and CHANGES.current and the bug tracker for a more complete list).
 
 Past students:
diff --git a/Lib/chicken/typemaps.i b/Lib/chicken/typemaps.i
index 56cd18a5d..fd587fd68 100644
--- a/Lib/chicken/typemaps.i
+++ b/Lib/chicken/typemaps.i
@@ -93,7 +93,6 @@ or you can use the %apply directive :
 
 */
 
-// These typemaps contributed by Robin Dunn
 //----------------------------------------------------------------------
 //
 // T_OUTPUT typemap (and helper function) to return multiple argouts as
diff --git a/Lib/mzscheme/mzrun.swg b/Lib/mzscheme/mzrun.swg
index a5128da56..06447d78d 100644
--- a/Lib/mzscheme/mzrun.swg
+++ b/Lib/mzscheme/mzrun.swg
@@ -91,7 +91,6 @@ SWIG_is_unsigned_integer(Scheme_Object *o)
   
 /* ----------------------------------------------------------------------- 
  * mzscheme 30X support code
- * Contributed by Hans Oesterholt
  * ----------------------------------------------------------------------- */
 
 #ifndef SCHEME_STR_VAL
@@ -252,10 +251,6 @@ SWIG_MzScheme_new_scheme_struct (Scheme_Env* env, const char* basename,
     return new_type;
 }
 
-/*** DLOPEN PATCH ******************************************************
- * Contributed by Hans Oesterholt-Dijkema (jan. 2006)
- ***********************************************************************/
-
 #if defined(_WIN32) || defined(__WIN32__)
 #define __OS_WIN32
 #endif
@@ -442,10 +437,6 @@ SWIG_MzScheme_new_scheme_struct (Scheme_Env* env, const char* basename,
     }
   }
 
-/*** DLOPEN PATCH ******************************************************
- * Contributed by Hans Oesterholt-Dijkema (jan. 2006)
- ***********************************************************************/
-
 /* The interpreter will store a pointer to this structure in a global
    variable called swig-runtime-data-type-pointer.  The instance of this
    struct is only used if no other module has yet been loaded */