diff --git a/ChangeLog b/ChangeLog
index e89536bbd8..1c0d58eaf9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Thu Jul 16 08:53:26 2009  Koichi Sasada  <ko1@atdot.net>
+
+	* io.c (argf_free): free data body.
+
 Wed Jul 15 23:46:55 2009  Koichi Sasada  <ko1@atdot.net>
 
 	* method.h, vm_core.h: add rb_method_entry_t.  Remove nodes around
diff --git a/io.c b/io.c
index 4e576e710e..9720145fc1 100644
--- a/io.c
+++ b/io.c
@@ -6479,7 +6479,8 @@ static void
 argf_free(void *ptr)
 {
     struct argf *p = ptr;
-    free(p->inplace);
+    xfree(p->inplace);
+    xfree(p);
 }
 
 static inline void