diff --git a/bin/unix/evennia-docker-start.sh b/bin/unix/evennia-docker-start.sh
index 5c87052da9..2f4c6033b7 100755
--- a/bin/unix/evennia-docker-start.sh
+++ b/bin/unix/evennia-docker-start.sh
@@ -9,7 +9,7 @@ PS1="evennia|docker \w $ "
 
 cmd="$@"
 output="Docker starting with argument '$cmd' ..."
-if test -z $cmd; then
+if test -z "$cmd"; then
     cmd="bash"
     output="No argument given, starting shell ..."
 fi