diff --git a/scripts/post-install.sh b/scripts/post-install.sh
index 33598fbd..f400169a 100755
--- a/scripts/post-install.sh
+++ b/scripts/post-install.sh
@@ -49,7 +49,7 @@ cleanInstall() {
     else
         # rhel/centos7 cannot use ExecStartPre=+ to specify the pre start should be run as root
         # even if you want your service to run as non root.
-        if [] "${systemd_version}" -lt 231 ]; then
+        if [ "${systemd_version}" -lt 231 ]; then
             printf "\033[31m systemd version %s is less then 231, fixing the service file \033[0m\n" "${systemd_version}"
             sed -i "s/=+/=/g" /etc/systemd/system/unpoller.service
         fi