diff --git a/mercurial.spec b/mercurial.spec
index d287bd3..5f6facd 100644
--- a/mercurial.spec
+++ b/mercurial.spec
@@ -22,7 +22,6 @@ URL: https://mercurial-scm.org/
 Source0: https://www.mercurial-scm.org/release/%{name}-%{upstreamversion}.tar.gz
 Source1: mercurial-site-start.el
 BuildRequires: make
-BuildRequires: bash-completion
 BuildRequires: emacs-el
 BuildRequires: emacs-nox
 BuildRequires: gcc
@@ -177,14 +176,6 @@ grep 'hgk.py*' < %{name}.files > %{name}-hgk.files
 install -D -m 755 contrib/hgk       %{buildroot}%{_libexecdir}/mercurial/hgk
 install -m 755 contrib/hg-ssh       %{buildroot}%{_bindir}
 
-bash_completion_dir=%{buildroot}$(pkg-config --variable=completionsdir bash-completion)
-mkdir -p $bash_completion_dir
-install -m 644 contrib/bash_completion $bash_completion_dir/hg
-
-zsh_completion_dir=%{buildroot}%{_datadir}/zsh/site-functions
-mkdir -p $zsh_completion_dir
-install -m 644 contrib/zsh_completion $zsh_completion_dir/_mercurial
-
 mkdir -p %{buildroot}%{_emacs_sitelispdir}/mercurial
 
 pushd contrib
@@ -235,12 +226,10 @@ rm -rf %{buildroot}%{python3_sitearch}/mercurial/locale
 %doc %attr(644,root,root) %{_mandir}/man?/hg*
 %doc %attr(644,root,root) contrib/*.svg
 %dir %{python3_sitearch}/%{name}-*-py*.egg-info
-%dir %{_datadir}/zsh/
-%dir %{_datadir}/zsh/site-functions/
 %dir %{_sysconfdir}/mercurial
 %dir %{_sysconfdir}/mercurial/hgrc.d
-%dir %{_datadir}/bash-completion/
-%{_datadir}/zsh/site-functions/_mercurial
+%{bash_completions_dir}/hg
+%{zsh_completions_dir}/_hg
 %exclude %{python3_sitearch}/mercurial/rustext%{python3_ext_suffix}
 %{python3_sitearch}/mercurial/
 %{python3_sitearch}/hgext/