--- a/src/pyams_file/thumbnail.py	Mon Jul 20 15:21:00 2020 +0200
+++ b/src/pyams_file/thumbnail.py	Mon Sep 07 16:07:08 2020 +0200
@@ -291,7 +291,7 @@
     If image in an SVG image, a "div" is returned containing whole SVG data of given image.
     """
 
-    def render(self, context=None, width=None, height=None, css_class='', img_class=''):
+    def render(self, context=None, width=None, height=None, css_class='', img_class='', alt=''):
         if context is None:
             context = self.context
-        return render_image(context, width, height, self.request, css_class, img_class, True)
+        return render_image(context, width, height, self.request, css_class, img_class, True, alt)