diff --git a/lib/com_err/parse.y b/lib/com_err/parse.y
index 99dddbe1e..d64681d90 100644
--- a/lib/com_err/parse.y
+++ b/lib/com_err/parse.y
@@ -35,8 +35,6 @@
 #include "compile_et.h"
 #include "lex.h"
 
-RCSID("$Id$");
-
 void yyerror (char *s);
 static long name2number(const char *str);