diff --git a/sys/geom/label/g_label_msdosfs.c b/sys/geom/label/g_label_msdosfs.c
index 2ba35ff80f51..06d5f2a8e0f0 100644
--- a/sys/geom/label/g_label_msdosfs.c
+++ b/sys/geom/label/g_label_msdosfs.c
@@ -136,7 +136,7 @@ g_label_msdosfs_taste(struct g_consumer *cp, char *label, size_t size)
 		if (strncmp(pfat32_bsbpb->BS_VolLab, LABEL_NO_NAME,
 		    sizeof(pfat32_bsbpb->BS_VolLab)) != 0) {
 			copysize = MIN(size - 1,
-			    sizeof(pfat32_bsbpb->BS_VolLab) + 1);
+			    sizeof(pfat32_bsbpb->BS_VolLab));
 			memcpy(label, pfat32_bsbpb->BS_VolLab, copysize);
 			label[copysize] = '\0';
 			goto endofchecks;
diff --git a/usr.sbin/fstyp/msdosfs.c b/usr.sbin/fstyp/msdosfs.c
index ce745869edba..47d2383fbc8f 100644
--- a/usr.sbin/fstyp/msdosfs.c
+++ b/usr.sbin/fstyp/msdosfs.c
@@ -104,7 +104,7 @@ fstyp_msdosfs(FILE *fp, char *label, size_t size)
 		if (strncmp(pfat32_bsbpb->BS_VolLab, LABEL_NO_NAME,
 		    sizeof(pfat32_bsbpb->BS_VolLab)) != 0) {
 			copysize = MIN(size - 1,
-			    sizeof(pfat32_bsbpb->BS_VolLab) + 1);
+			    sizeof(pfat32_bsbpb->BS_VolLab));
 			memcpy(label, pfat32_bsbpb->BS_VolLab, copysize);
 			label[copysize] = '\0';
 			goto endofchecks;