diff --git a/docs/reference/gtk/question_index.sgml b/docs/reference/gtk/question_index.sgml
index 27d40fb93e..6dc03c6d3d 100644
--- a/docs/reference/gtk/question_index.sgml
+++ b/docs/reference/gtk/question_index.sgml
@@ -254,7 +254,7 @@ if (g_file_get_contents (filename, &text, &length, NULL))
        g_print (utf8_text);
   }
 else 
-  fprintf (stderr, "Unable to read file %percnt;s\n", filename);
+  fprintf (stderr, "Unable to read file %s\n", filename);
 </programlisting></informalexample>
 </para>
 <para>