diff --git a/examples/devos/shell/hooks/pre-commit.sh b/examples/devos/shell/hooks/pre-commit.sh
index a7fa908..795a5b6 100755
--- a/examples/devos/shell/hooks/pre-commit.sh
+++ b/examples/devos/shell/hooks/pre-commit.sh
@@ -1,7 +1,6 @@
 #!/usr/bin/env bash
 
-if git rev-parse --verify HEAD >/dev/null 2>&1
-then
+if git rev-parse --verify HEAD >/dev/null 2>&1; then
   against=HEAD
 else
   # Initial commit: diff against an empty tree object
@@ -14,19 +13,17 @@ nix_files=($($diff -- '*.nix'))
 all_files=($($diff))
 
 # Format staged nix files.
-if (( ${#nix_files[@]} != 0 )); then
-  nixpkgs-fmt "${nix_files[@]}" \
-  && git add "${nix_files[@]}"
+if ((${#nix_files[@]} != 0)); then
+  nixpkgs-fmt "${nix_files[@]}" &&
+    git add "${nix_files[@]}"
 fi
 
 # check editorconfig
-if (( ${#all_files[@]} != 0 )); then
-  editorconfig-checker -- "${all_files[@]}"
-fi
-
-if [[ $? != '0' ]]; then
-  printf "%b\n" \
-    "\nCode is not aligned with .editorconfig" \
-    "Review the output and commit your fixes" >&2
-  exit 1
+if ((${#all_files[@]} != 0)); then
+  if ! editorconfig-checker -- "${all_files[@]}"; then
+    printf "%b\n" \
+      "\nCode is not aligned with .editorconfig" \
+      "Review the output and commit your fixes" >&2
+    exit 1
+  fi
 fi