1 files changed, 4 insertions, 3 deletions
diff --git a/board/zeus/zeus.c b/board/zeus/zeus.c
index 7e33d3f383..18cb85faf3 100644
--- a/board/zeus/zeus.c
+++ b/board/zeus/zeus.c
@@ -161,7 +161,8 @@ int misc_init_r(void)
  */
 int checkboard(void)
 {
-	char *s = getenv("serial#");
+	char buf[64];
+	int i = getenv_f("serial#", buf, sizeof(buf));
 
 	puts("Board: Zeus-");
 
@@ -172,9 +173,9 @@ int checkboard(void)
 
 	puts(" of BulletEndPoint");
 
-	if (s != NULL) {
+	if (i > 0) {
 		puts(", serial# ");
-		puts(s);
+		puts(buf);
 	}
 	putc('\n');