Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
---
 ext/dl/dl.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/ext/dl/dl.c b/ext/dl/dl.c
index 8a4643c..ef420cf 100644
--- a/ext/dl/dl.c
+++ b/ext/dl/dl.c
@@ -588,7 +588,7 @@ VALUE
 rb_dl_strdup(VALUE self, VALUE str)
 {
   SafeStringValue(str);
-  return rb_dlptr_new(strdup(RSTRING(str)->ptr), RSTRING(str)->len, dlfree);
+  return rb_dlptr_new(strdup(RSTRING(str)->ptr), strlen(RSTRING(str)->ptr)+1, dlfree);
 }
 
 static VALUE
-- 
1.6.6