diff --git a/readme.md b/readme.md
index 91d58fe..bffa2f5 100644
--- a/readme.md
+++ b/readme.md
@@ -81,7 +81,7 @@ AIX, Amiga OS, Android, Arch, Bada, BeOS, BlackBerry, CentOS, Chromium OS,
 Contiki, Fedora, Firefox OS, FreeBSD, Debian, DragonFly, Fuchsia, Gentoo, GNU,
 Haiku, Hurd, iOS, Joli, KaiOS, Linpus, Linux, Mac OS, Mageia, Mandriva, MeeGo,
 Minix, Mint, Morph OS, NetBSD, Nintendo, OpenBSD, OpenVMS, OS/2, Palm, PC-BSD,
-PCLinuxOS, Plan9, Playstation, QNX, RedHat, RIM Tablet OS, RISC OS, Sailfish,
+PCLinuxOS, Plan9, PlayStation, QNX, RedHat, RIM Tablet OS, RISC OS, Sailfish,
 Series40, Slackware, Solaris, SUSE, Symbian, Tizen, Ubuntu, Unix, VectorLinux,
 WebOS, Windows [Phone/Mobile], Zenwalk, ...