diff --git a/ChangeLog b/ChangeLog
index 99c89542eb..d10714b192 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Wed Jan  9 22:07:42 2013  Masaki Matsushita  <glass.saga@gmail.com>
+
+	* load.c (load_lock): if thread shield is destroyed and there is no
+	  waiting thread, insert new thread shield into load_table.
+	  [Bug #7530] [ruby-core:50645]
+
 Wed Jan  9 21:43:32 2013  Masaki Matsushita  <glass.saga@gmail.com>
 
 	* load.c (load_lock): revert r38744. it should acquire new thread
diff --git a/load.c b/load.c
index 70e3ee8646..a2986d42ed 100644
--- a/load.c
+++ b/load.c
@@ -669,7 +669,7 @@ load_lock(const char *ftptr)
     switch (rb_thread_shield_wait((VALUE)data)) {
       case Qfalse:
 	data = (st_data_t)ftptr;
-	st_delete(loading_tbl, &data, 0);
+	st_insert(loading_tbl, data, (st_data_t)rb_thread_shield_new());
 	return 0;
       case Qnil:
 	return 0;