diff --git a/Documentation/btrfs-subvolume.rst b/Documentation/btrfs-subvolume.rst
index ec8e088b..33598b9b 100644
--- a/Documentation/btrfs-subvolume.rst
+++ b/Documentation/btrfs-subvolume.rst
@@ -79,6 +79,9 @@ delete [options] [<subvolume> [<subvolume>...]], delete -i|--subvolid <subvolid>
         crash.  Use one of the *--commit* options to wait until the operation is
         safely stored on the device.
 
+        Deleting subvolume needs sufficient permissions, by default the owner
+        cannot delete it unless it's enabled by a mount option
+        *user_subvol_rm_allowed*, or deletion is run as root.
         The default subvolume (see ``btrfs subvolume set-default``) cannot be deleted and
         returns error (EPERM) and this is logged to the system log. A subvolume that's
         currently involved in send (see ``btrfs send``) also cannot be deleted until the
diff --git a/cmds/subvolume.c b/cmds/subvolume.c
index 0cc1abd2..adbac908 100644
--- a/cmds/subvolume.c
+++ b/cmds/subvolume.c
@@ -423,7 +423,7 @@ again:
 
 		error_btrfs_util(err);
 		if (saved_errno == EPERM)
-			warning("deletion failed with EPERM, send may be in progress");
+			warning("deletion failed with EPERM, you don't have permissions or send may be in progress");
 		ret = 1;
 		goto out;
 	}