diff --git a/module/os/freebsd/zfs/zfs_vfsops.c b/module/os/freebsd/zfs/zfs_vfsops.c
index 2820f10b5d..a1e0595bda 100644
--- a/module/os/freebsd/zfs/zfs_vfsops.c
+++ b/module/os/freebsd/zfs/zfs_vfsops.c
@@ -230,7 +230,8 @@ zfs_get_temporary_prop(dsl_dataset_t *ds, zfs_prop_t zfs_prop, uint64_t *val,
 
 	vfs_unbusy(vfsp);
 	if (tmp != *val) {
-		(void) strcpy(setpoint, "temporary");
+		if (setpoint)
+			(void) strcpy(setpoint, "temporary");
 		*val = tmp;
 	}
 	return (0);
diff --git a/module/os/linux/zfs/zfs_vfsops.c b/module/os/linux/zfs/zfs_vfsops.c
index c921e587c7..2d9b27a908 100644
--- a/module/os/linux/zfs/zfs_vfsops.c
+++ b/module/os/linux/zfs/zfs_vfsops.c
@@ -608,7 +608,8 @@ zfs_get_temporary_prop(dsl_dataset_t *ds, zfs_prop_t zfs_prop, uint64_t *val,
 	}
 
 	if (tmp != *val) {
-		(void) strcpy(setpoint, "temporary");
+		if (setpoint)
+			(void) strcpy(setpoint, "temporary");
 		*val = tmp;
 	}
 	return (0);