diff --git a/CHANGES.current b/CHANGES.current
index 1b5cbe4de..390c2b50f 100644
--- a/CHANGES.current
+++ b/CHANGES.current
@@ -5,6 +5,9 @@ See the RELEASENOTES file for a summary of changes in each release.
 Version 2.0.5 (in progress)
 ===========================
 
+2012-04-14: wsfulton
+            [Ruby] Apply patch #3517769 from Robin Stocker to fix compile error on MacRuby using RSTRING_PTR.
+
 2012-04-13: wsfulton
             Apply patch #3511009 from Leif Middelschulte for slightly optimised char * variable wrappers.
 
diff --git a/Lib/ruby/rubyrun.swg b/Lib/ruby/rubyrun.swg
index a8afc6a10..a2d246e97 100644
--- a/Lib/ruby/rubyrun.swg
+++ b/Lib/ruby/rubyrun.swg
@@ -189,7 +189,7 @@ SWIG_Ruby_NewPointerObj(void *ptr, swig_type_info *type, int flags)
         downcast methods. */
       if (obj != Qnil) {
         VALUE value = rb_iv_get(obj, "@__swigtype__");
-        char* type_name = RSTRING_PTR(value);
+        const char* type_name = RSTRING_PTR(value);
 				
         if (strcmp(type->name, type_name) == 0) {
           return obj;