diff --git a/CHANGES.current b/CHANGES.current
index 41d02270c..bde32009e 100644
--- a/CHANGES.current
+++ b/CHANGES.current
@@ -5,6 +5,9 @@ See the RELEASENOTES file for a summary of changes in each release.
 Version 2.0.12 (9 Feb 2014)
 ===========================
 
+2013-10-17: wsfulton
+            [Python] Fix SF #1345 - Missing #include <stddef.h> for offsetof when using -builtin.
+
 2013-10-12: wsfulton
             [Lua] Apply #92 - missing return statements for SWIG_Lua_add_namespace_details()
             and SWIG_Lua_namespace_register().
diff --git a/Lib/python/pyinit.swg b/Lib/python/pyinit.swg
index 6a6de0963..79df023de 100644
--- a/Lib/python/pyinit.swg
+++ b/Lib/python/pyinit.swg
@@ -4,6 +4,10 @@
 
 %insert(init) "swiginit.swg"
 
+#if defined(SWIGPYTHON_BUILTIN)
+%fragment("<stddef.h>"); // For offsetof
+#endif
+
 %init %{
 
 #ifdef __cplusplus