diff --git a/189574.patch b/189574.patch
new file mode 100644
index 0000000..71d21c5
--- /dev/null
+++ b/189574.patch
@@ -0,0 +1,24 @@
+From 91e18cd7cd37d868425bf481ca453edfa81c9cc6 Mon Sep 17 00:00:00 2001
+From: Gabriel Ebner <gebner@gebner.org>
+Date: Sat, 3 Sep 2022 11:56:49 +0200
+Subject: [PATCH] khal: fix fish/zsh completion
+
+---
+ pkgs/applications/misc/khal/default.nix | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/pkgs/applications/misc/khal/default.nix b/pkgs/applications/misc/khal/default.nix
+index b6bb65a0bfffb..f822ed8f0c2b9 100644
+--- a/pkgs/applications/misc/khal/default.nix
++++ b/pkgs/applications/misc/khal/default.nix
+@@ -32,8 +32,8 @@ with python3.pkgs; buildPythonApplication rec {
+     # shell completions
+     installShellCompletion --cmd khal \
+       --bash <(_KHAL_COMPLETE=bash_source $out/bin/khal) \
+-      --fish <(_KHAL_COMPLETE=zsh_source $out/bin/khal) \
+-      --zsh <(_KHAL_COMPLETE=fish_source $out/bin/khal)
++      --zsh <(_KHAL_COMPLETE=zsh_source $out/bin/khal) \
++      --fish <(_KHAL_COMPLETE=fish_source $out/bin/khal)
+ 
+     # man page
+     PATH="${python3.withPackages (ps: with ps; [ sphinx sphinxcontrib_newsfeed ])}/bin:$PATH" \
diff --git a/flake.nix b/flake.nix
index 47a420b..bef6297 100644
--- a/flake.nix
+++ b/flake.nix
@@ -15,7 +15,7 @@
 
     channels.nixpkgs.input = nixpkgs;
 
-    channels.nixpkgs.patches = [ ];
+    channels.nixpkgs.patches = [ ./189574.patch ];
 
     nix.generateRegistryFromInputs = true;