diff --git a/man7/attr.7 b/man7/attr.7
index 068a11c0b..211e5afbe 100644
--- a/man7/attr.7
+++ b/man7/attr.7
@@ -51,8 +51,8 @@ Writing replaces any previous value with the new value.
 Space consumed for extended attributes is counted towards the disk quotas
 of the file owner and file group.
 .PP
-Currently, support for extended attributes is implemented on Linux by the
-ext2, ext3, ext4, XFS, JFS and Reiserfs filesystems.
+Currently, the filesystems that support extended attributes include
+Btrfs, ext2, ext3, ext4, XFS, JFS, and Reiserfs.
 .SS Extended attribute namespaces
 Attribute names are zero-terminated strings.
 The attribute name is always specified in the fully qualified
@@ -142,7 +142,7 @@ extended attribute must fit on a single filesystem block (1024, 2048
 or 4096 bytes, depending on the block size specified when the
 filesystem was created).
 .PP
-In the XFS and Reiserfs filesystem implementations, there is no
+In the Btrfs, XFS, and Reiserfs filesystem implementations, there is no
 practical limit on the number or size of extended attributes
 associated with a file, and the algorithms used to store extended
 attribute information on disk are scalable.