diff --git a/_c4ctrl b/_c4ctrl
new file mode 100644
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+++ b/_c4ctrl
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+#compdef c4ctrl c4ctrl.py
+
+# zsh completion script for c4ctrl.
+#
+# Last updated: 2017 Apr 17
+# Author: Shy
+# License: This file is placed in the public domain.
+
+local -a preset_rooms
+
+preset_rooms=( wohnzimmer plenar fnord keller )
+
+_arguments -s \
+  '(-h --help)'{-h,--help}'[show help message and exit]' \
+  '(-d --debug)'{-d,--debug}'[show what would be send to the broker but do not connect]' \
+  '(-s --status)'{-s,--status}'[display club status]' \
+  '(-g --gate)'{-g,--gate}'[open gate]' \
+  '(-S --shutdown)'{-S,--shutdown}'[shutdown (twice forces shutdown)]' \
+  '(-k --kl-mode)'{-k,--kl-mode}'[set Kitchenlight mode]:Kitchenlight mode:(off checker matrix mood oc pacman sine text flood clock)' \
+  '(-i --list-kl-modes)'{-i,--list-kl-modes}'[list Kitchenlight modes)]' \
+  '(-w --wohnzimmer)'{-w,--wohnzimmer}'[apply a preset to room Wohnzimmer]:preset:->presets_read' \
+  '(-p --plenarsaal)'{-p,--plenarsaal}'[apply a preset to room Plenarsaal]:prese->presets_read' \
+  '(-f --fnordcenter)'{-f,--fnordcenter}'[apply a preset to room Fnordcenter]:preset:->presets_read' \
+  '(-m --magic)'{-m,--magic}'[use magic when switching presets]' \
+  '(-l --list-presets)'{-l,--list-presets}'[list presets]' \
+  '(-o --store-preset)'{-o,--store-preset}'[store current state as preset]:preset name:->presets_write' \
+  '-W[switch lights in Wohnzimmer]::switch code:( )' \
+  '-P[switch lights in Plenarsaal]::switch code:( )' \
+  '-F[switch lights in Fnordcenter]::switch code:( )' \
+  '-K[switch lights in Keller]::switch code:( )' \
+  '-r[activate remote preset]:remote preset:( )::room:(${preset_rooms[@]})' \
+  '-R[list remote presets]::room:(${preset_rooms[@]})'
+
+
+case "$state" in
+    presets*)
+        local ret=0 c4ctrl_cfg_dir
+        if [[ "$XDG_CONFIG_DIR" ]]; then
+            c4ctrl_cfg_dir="$XDG_CONFIG_DIR/c4ctrl"
+        else
+            c4ctrl_cfg_dir="$HOME/.config/c4ctrl"
+        fi
+        if [[ -d "$c4ctrl_cfg_dir" ]]; then
+            if [[ "$state" == "presets_read" ]]; then
+                # 'off' and 'random' are builtins and always 'readable'.
+                _values Presets 'off' 'random'
+                ret=$?
+            fi
+            _files -W "$c4ctrl_cfg_dir"
+            ret=$((ret+?))
+            return ret
+        fi
+        return 1
+        ;;
+esac
+