diff --git a/ox-rst.el b/ox-rst.el
index 29e98d4..d8aa650 100644
--- a/ox-rst.el
+++ b/ox-rst.el
@@ -401,8 +401,7 @@ possible.  It doesn't apply to `inlinetask' elements."
 					(plist-get info :with-tags)
 					(let ((tag-list (org-export-get-tags element info)))
 					  (and tag-list
-						   (format ":%s:"
-								   (mapconcat 'identity tag-list ":"))))))
+                           (org-make-tag-string tag-list)))))
 		 (priority
 		  (and (plist-get info :with-priority)
 			   (let ((char (org-element-property :priority element)))