diff --git a/pkgs/applications/version-management/git-and-tools/tig/default.nix b/pkgs/applications/version-management/git-and-tools/tig/default.nix
index 6d2753e45437..a407f6e7ab12 100644
--- a/pkgs/applications/version-management/git-and-tools/tig/default.nix
+++ b/pkgs/applications/version-management/git-and-tools/tig/default.nix
@@ -31,6 +31,10 @@ stdenv.mkDerivation rec {
   installPhase = ''
     make install
     make install-doc
+
+    substituteInPlace contrib/tig-completion.zsh \
+      --replace 'e=$(dirname ''${funcsourcetrace[1]%:*})/tig-completion.bash' "e=$out/etc/bash_completion.d/tig-completion.bash"
+
     install -D contrib/tig-completion.bash $out/etc/bash_completion.d/tig-completion.bash
     install -D contrib/tig-completion.zsh $out/share/zsh/site-functions/_tig
     cp contrib/vim.tigrc $out/etc/