diff --git a/lisp/org-html.el b/lisp/org-html.el
index 5d5347880..7a4564d85 100644
--- a/lisp/org-html.el
+++ b/lisp/org-html.el
@@ -888,7 +888,8 @@ OPT-PLIST is the export options list."
 	  (if (string-match "^file:" desc)
 	      (setq desc (substring desc (match-end 0)))))
 	(setq desc (org-add-props
-		       (concat "<img src=\"" desc "\"/>")
+		       (concat "<img src=\"" desc "\" alt=\"" 
+			       (file-name-nondirectory desc) "\"/>")
 		       '(org-protected t))))
       (cond
        ((equal type "internal")