diff --git a/sbin/bsdlabel/bsdlabel.c b/sbin/bsdlabel/bsdlabel.c
index b99c27918594..072c4cfa0884 100644
--- a/sbin/bsdlabel/bsdlabel.c
+++ b/sbin/bsdlabel/bsdlabel.c
@@ -781,7 +781,7 @@ getasciilabel(FILE *f, struct disklabel *lp)
 	lp->d_sbsize = 0;				/* XXX */
 	while (fgets(line, sizeof(line) - 1, f)) {
 		lineno++;
-		if ((cp = strchr(line,'\n')) != 0)
+		if ((cp = strchr(line,'\n')) != NULL)
 			*cp = '\0';
 		cp = skip(line);
 		if (cp == NULL)