diff --git a/src/polkit-mate-authentication-agent-1.desktop.in.in b/src/polkit-mate-authentication-agent-1.desktop.in.in
index da1129a..a60ac35 100644
--- a/src/polkit-mate-authentication-agent-1.desktop.in.in
+++ b/src/polkit-mate-authentication-agent-1.desktop.in.in
@@ -4,7 +4,6 @@ Comment=PolicyKit Authentication Agent for the MATE Desktop
 Exec=@FULL_LIBEXECDIR@/polkit-mate-authentication-agent-1
 Terminal=false
 Type=Application
-Categories=
 NoDisplay=true
 OnlyShowIn=MATE;
 X-MATE-AutoRestart=true