diff --git a/Lib/ruby/rubyhead.swg b/Lib/ruby/rubyhead.swg
index 8e6e2e7d0..d17fdbaae 100644
--- a/Lib/ruby/rubyhead.swg
+++ b/Lib/ruby/rubyhead.swg
@@ -7,6 +7,9 @@
 #ifdef read
 # undef read
 #endif
+#ifdef bind
+# undef bind
+#endif
 
 
 /* Ruby 1.7 defines NUM2LL(), LL2NUM() and ULL2NUM() macros */