diff --git a/doc/hosting/linux_scripts/common.sh b/doc/hosting/linux_scripts/common.sh
index f7587eefdca..7853597429d 100644
--- a/doc/hosting/linux_scripts/common.sh
+++ b/doc/hosting/linux_scripts/common.sh
@@ -5,7 +5,7 @@ function check {
     echo "[ERROR] netstat or ss is required to check for available ports"
     exit 1
   fi
-  if [ ! $(command -v $wz2100cmd) ]; then
+  if [ ! "$(command -v $wz2100cmd)" ]; then
     echo "[ERROR] Cannot execute \"$wz2100cmd\"."
     exit 1
   fi