diff --git a/jquery.counterup.js b/jquery.counterup.js
index bc7871f..34a745b 100644
--- a/jquery.counterup.js
+++ b/jquery.counterup.js
@@ -63,7 +63,6 @@
                 if ($this.data('counterup-nums').length) {
                     setTimeout($this.data('counterup-func'), $settings.delay);
                 } else {
-                    delete $this.data('counterup-nums');
                     $this.data('counterup-nums', null);
                     $this.data('counterup-func', null);
                 }
@@ -80,4 +79,4 @@
 
   };
 
-})( jQuery );
\ No newline at end of file
+})( jQuery );