1 files changed, 4 insertions, 0 deletions
diff --git a/string.c b/string.c
index 7877e64a98..4746842f5c 100644
--- a/string.c
+++ b/string.c
@@ -25,6 +25,10 @@
 #include <unistd.h>
 #endif
 
+#undef rb_str_new2
+#undef rb_tainted_str_new2
+#undef rb_usascii_str_new2
+
 VALUE rb_cString;
 VALUE rb_cSymbol;