diff --git a/src/polyp/utf8.c b/src/polyp/utf8.c
index bb8621e23..300a54caf 100644
--- a/src/polyp/utf8.c
+++ b/src/polyp/utf8.c
@@ -1,4 +1,4 @@
-/* $Id */
+/* $Id$ */
 
 /* This file is based on the GLIB utf8 validation functions. The
  * original license text follows. */