1 files changed, 1 insertions, 0 deletions
diff --git a/read.c b/read.c
index 6c1c3177..94dffc06 100644
--- a/read.c
+++ b/read.c
@@ -92,6 +92,7 @@ static	const char * const	mandocerrs[MANDOCERR_MAX] = {
 	"Mdocdate missing",
 	"legacy man(7) date format",
 	"RCS id missing",
+	"duplicate RCS id",
 	"useless macro",
 	"consider using OS macro",
 	"errnos out of order",