diff -r 097554712637 Lib/idlelib/ReplaceDialog.py
--- a/Lib/idlelib/ReplaceDialog.py	Wed Apr 03 00:42:24 2013 -0500
+++ b/Lib/idlelib/ReplaceDialog.py	Wed Apr 03 19:16:11 2013 -0500
@@ -122,6 +122,7 @@
         text.undo_block_stop()
         if first and last:
             self.show_hit(first, last)
+        self.close()
 
     def do_find(self, ok=0):
         if not self.engine.getprog():