diff --git a/docker_inventory.cf b/docker_inventory.cf
index d64958c..f01a5ec 100644
--- a/docker_inventory.cf
+++ b/docker_inventory.cf
@@ -13,7 +13,8 @@ bundle agent docker_inventory
 
     have_docker::
       "status_list" slist => { "Created", "Restarting", "Running", "Removing", "Pause", "Exited", "Dead" };
-      "status_count[${status_list}]" int => int(execresult(`${docker} ps -a --filter "status=\$(echo ${status_list} | tr '[:upper:]' '[:lower:]')" --format "{{.Names}}" | wc -l`, "useshell", "stdout")),
+      "status_count[${status_list}]" int => int(execresult(`echo ${status_list} | tr '[:upper:]' '[:lower:]' | xargs -i{} ${docker} ps -a --filter "status="{} --format "{{.Names}}" | wc -l`, "useshell", "stdout")),
+
         meta => { "inventory", "attribute_name=Containers - ${status_list} count" };
       "running_string" string => execresult(`${docker} ps -a --filter "status=running" --format "{{.Names}}"`, "noshell", "stdout");
       "running_names" slist => splitstring("${running_string}", "\n", "inf"),