diff --git a/Shorewall-core/configure b/Shorewall-core/configure
index c192c24b4..37f71d39d 100755
--- a/Shorewall-core/configure
+++ b/Shorewall-core/configure
@@ -196,7 +196,7 @@ elif [ -n "${options[VARDIR]}" ]; then
 fi
 
 if [ -z "${options[SERVICEDIR]}" ]; then
-    $options[SERVICEDIR]="${options[SYSTEMD]}"
+    options[SERVICEDIR]="${options[SYSTEMD]}"
 fi
 
 for on in \