diff --git a/ChangeLog b/ChangeLog
index a8d7ea55f5..0dee4686b9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Thu Sep 20 23:05:11 2012  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
+
+	* thread_pthread.c (native_cond_initialize): destroy condattr
+	  after using it. Patch by Stanislav Sedov. Thank you.
+	  [Bug #7041] [ruby-core:47619]
+
 Thu Sep 20 22:53:02 2012  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
 
 	* thread_pthread.c (native_cond_initialize): clean up #ifdef condition.
diff --git a/thread_pthread.c b/thread_pthread.c
index a9c8fa68fb..be6b017e50 100644
--- a/thread_pthread.c
+++ b/thread_pthread.c
@@ -263,6 +263,7 @@ native_cond_initialize(rb_thread_cond_t *cond, int flags)
     }
 
     r = pthread_cond_init(&cond->cond, &attr);
+    pthread_condattr_destroy(&attr);
 # else
     r = pthread_cond_init(&cond->cond, NULL);
 # endif