diff --git a/lib/libefi/rdwr_efi.c b/lib/libefi/rdwr_efi.c
index 147e30a374..24ec365b5a 100644
--- a/lib/libefi/rdwr_efi.c
+++ b/lib/libefi/rdwr_efi.c
@@ -861,11 +861,11 @@ write_pmbr(int fd, struct dk_gpt *vtoc)
 	/* LINTED -- always longlong aligned */
 	dk_ioc.dki_data = (efi_gpt_t *)buf;
 	if (efi_ioctl(fd, DKIOCGETEFI, &dk_ioc) == -1) {
-		(void *) memcpy(&mb, buf, sizeof (mb));
+		(void) memcpy(&mb, buf, sizeof (mb));
 		bzero(&mb, sizeof (mb));
 		mb.signature = LE_16(MBB_MAGIC);
 	} else {
-		(void *) memcpy(&mb, buf, sizeof (mb));
+		(void) memcpy(&mb, buf, sizeof (mb));
 		if (mb.signature != LE_16(MBB_MAGIC)) {
 			bzero(&mb, sizeof (mb));
 			mb.signature = LE_16(MBB_MAGIC);
@@ -905,7 +905,7 @@ write_pmbr(int fd, struct dk_gpt *vtoc)
 		*cp++ = 0xff;
 	}
 
-	(void *) memcpy(buf, &mb, sizeof (mb));
+	(void) memcpy(buf, &mb, sizeof (mb));
 	/* LINTED -- always longlong aligned */
 	dk_ioc.dki_data = (efi_gpt_t *)buf;
 	dk_ioc.dki_lba = 0;