diff --git a/tiles/search.c b/tiles/search.c
index f6c760e6..6f91a66f 100644
--- a/tiles/search.c
+++ b/tiles/search.c
@@ -17,7 +17,7 @@
  */
 
 #ifndef	lint
-static char rcsid[] __attribute__ ((unused)) = "$Header: /usr/cvsroot/magic-8.0/tiles/search.c,v 1.1.1.1 2008/02/03 20:43:50 tim Exp $";
+static const char rcsid[] __attribute__ ((unused)) = "$Header: /usr/cvsroot/magic-8.0/tiles/search.c,v 1.1.1.1 2008/02/03 20:43:50 tim Exp $";
 #endif	/* not lint */
 
 #include <stdio.h>
diff --git a/tiles/tile.c b/tiles/tile.c
index 6f846153..7a6dc347 100644
--- a/tiles/tile.c
+++ b/tiles/tile.c
@@ -17,7 +17,7 @@
  */
 
 #ifndef	lint
-static char rcsid[] __attribute__ ((unused)) = "$Header: /usr/cvsroot/magic-8.0/tiles/tile.c,v 1.1.1.1 2008/02/03 20:43:50 tim Exp $";
+static const char rcsid[] __attribute__ ((unused)) = "$Header: /usr/cvsroot/magic-8.0/tiles/tile.c,v 1.1.1.1 2008/02/03 20:43:50 tim Exp $";
 #endif	/* not lint */
 
 #include <stdio.h>