diff --git a/dracut/modules.d/90wwinit/load-wwinit.sh b/dracut/modules.d/90wwinit/load-wwinit.sh
index 72d2180c..9a793315 100755
--- a/dracut/modules.d/90wwinit/load-wwinit.sh
+++ b/dracut/modules.d/90wwinit/load-wwinit.sh
@@ -11,7 +11,7 @@ do
         # Load runtime overlay from a static privledged port.
         # Others use default settings.
         localport=""
-        if [[ "$archive" == *"runtime"* ]]
+        if [[ "${archive}" == "${wwinit_runtime}" ]]
         then
             localport="--local-port 1-1023"
         fi