diff --git a/usr.bin/calendar/io.c b/usr.bin/calendar/io.c
index 824ea67f9f0e..25cf9b5d451a 100644
--- a/usr.bin/calendar/io.c
+++ b/usr.bin/calendar/io.c
@@ -213,7 +213,7 @@ token(char *line, FILE *out, bool *skip)
 	}
 
 	if (strncmp(line, "ifdef", 5) == 0) {
-		walk = line + 6;
+		walk = line + 5;
 		trimlr(&walk);
 
 		if (*walk == '\0') {