diff --git a/polygerrit-ui/app/lint_test.sh b/polygerrit-ui/app/lint_test.sh
index 7ee74d8641..35939ba174 100755
--- a/polygerrit-ui/app/lint_test.sh
+++ b/polygerrit-ui/app/lint_test.sh
@@ -3,7 +3,7 @@
 set -ex
 
 eslint_bin=$(which npm)
-if [[ -z "$eslint_bin" ]]; then
+if [ -z "$eslint_bin" ]; then
     echo "NPM must be on the path."
     exit 1
 fi
@@ -11,7 +11,7 @@ fi
 eslint_bin=$(which eslint)
 eslint_config=$(npm list -g | grep -c eslint-config-google)
 eslint_plugin=$(npm list -g | grep -c eslint-plugin-html)
-if [[ -z "$eslint_bin" ]] || [[ eslint_config -eq "0" ]] || [[ eslint_plugin -eq "0" ]]; then
+if [ -z "$eslint_bin" ] || [ "$eslint_config" -eq "0" ] || [ "$eslint_plugin" -eq "0" ]; then
     echo "You must install ESLint and its dependencies from NPM."
     echo "> npm install -g eslint eslint-config-google eslint-plugin-html"
     echo "For more information, view the README:"