diff --git a/drivers/net/zorro8390.c b/drivers/net/zorro8390.c
index a45f995..fb215eb 100644
--- a/drivers/net/zorro8390.c
+++ b/drivers/net/zorro8390.c
@@ -190,7 +190,7 @@
 	    {0x00,	NE_EN0_RSARHI},
 	    {E8390_RREAD+E8390_START, NE_CMD},
 	};
-	for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++) {
+	for (i = 0; i < ARRAY_SIZE(program_seq); i++) {
 	    z_writeb(program_seq[i].value, ioaddr + program_seq[i].offset);
 	}
     }