diff --git a/gtk/gtkicontheme.c b/gtk/gtkicontheme.c
index 8b12c02eab..2bd7a13aa3 100644
--- a/gtk/gtkicontheme.c
+++ b/gtk/gtkicontheme.c
@@ -2306,6 +2306,7 @@ gtk_icon_theme_load_icon_for_scale (GtkIconTheme        *icon_theme,
     }
 
   pixbuf = gtk_icon_info_load_icon (icon_info, error);
+  g_prefix_error (error, "Failed to load %s: ", icon_info->filename);
   g_object_unref (icon_info);
 
   return pixbuf;