diff --git a/vim/.vim/ftplugin/bash.vim b/vim/.vim/ftplugin/bash.vim
index 1fb8b26..c69fa31 100644
--- a/vim/.vim/ftplugin/bash.vim
+++ b/vim/.vim/ftplugin/bash.vim
@@ -1,2 +1,8 @@
 " Use shfmt as ALE fixer for bash
 let b:ale_fixers=[ 'shfmt' ]
+
+" Indent with 4 spaces, simplify script, indent switch cases, use Bash variant
+let b:ale_sh_shfmt_options='-i 4 -s -ci -ln bash'
+
+" Use bash dialect explicitly, require explicit empty string test
+let b:ale_sh_shellcheck_options='-s bash -o avoid-nullary-conditions'
diff --git a/vim/.vim/ftplugin/sh.vim b/vim/.vim/ftplugin/sh.vim
index 8ea4807..f4e1bf1 100644
--- a/vim/.vim/ftplugin/sh.vim
+++ b/vim/.vim/ftplugin/sh.vim
@@ -1,2 +1,8 @@
 " Use shfmt as ALE fixer for sh
 let b:ale_fixers=[ 'shfmt' ]
+
+" Indent with 4 spaces, simplify the code, indent switch cases, use POSIX
+let b:ale_sh_shfmt_options='-i 4 -s -ci -ln posix'
+
+" Require explicit empty string test
+let b:ale_sh_shellcheck_options='-o avoid-nullary-conditions'
diff --git a/vim/.vim/ftplugin/zsh.vim b/vim/.vim/ftplugin/zsh.vim
index 1685f86..20233e4 100644
--- a/vim/.vim/ftplugin/zsh.vim
+++ b/vim/.vim/ftplugin/zsh.vim
@@ -1,2 +1,8 @@
 " Use shfmt as ALE fixer for zsh
 let b:ale_fixers=[ 'shfmt' ]
+
+" Indent with 4 spaces, simplify script, indent switch cases, use Bash variant
+let b:ale_sh_shfmt_options='-i 4 -s -ci -ln bash'
+
+" Use bash dialect explicitly, require explicit empty string test
+let b:ale_sh_shellcheck_options='-s bash -o avoid-nullary-conditions'