diff --git a/CHANGES b/CHANGES
index 99bb1fd..461b47d 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,6 +1,11 @@
 This is the changelog for developers, != changelog for the end user 
 that we distribute with the binaries. (see changelog)
 
+12/09/2006
+namespace
+- Fixed 64 Bit issue in patch.h, see http://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=1109
+  for details
+
 11/09/2006
 namespace
 - Fixed unnecessary warnings, see http://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=1108
diff --git a/radiant/patch.h b/radiant/patch.h
index 2362415..d176387 100644
--- a/radiant/patch.h
+++ b/radiant/patch.h
@@ -43,6 +43,7 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 #include "debugging/debugging.h"
 
 #include <set>
+#include <limits>
 
 #include "math/frustum.h"
 #include "string/string.h"
@@ -115,7 +116,7 @@ struct BezierCurve
   Vector3 right;
 };
 
-const std::size_t BEZIERCURVETREE_MAX_INDEX = 1 << ((sizeof(std::size_t) * 8) - 1);
+const std::size_t BEZIERCURVETREE_MAX_INDEX = std::numeric_limits<unsigned int>::max() / 2 + 1;
 
 struct BezierCurveTree
 {