diff --git a/lib/ansible/modules/extras/packaging/elasticsearch_plugin.py b/lib/ansible/modules/extras/packaging/elasticsearch_plugin.py
index e352f71758..f850d46dbd 100644
--- a/lib/ansible/modules/extras/packaging/elasticsearch_plugin.py
+++ b/lib/ansible/modules/extras/packaging/elasticsearch_plugin.py
@@ -167,7 +167,7 @@ def main():
     cmd_args = [plugin_bin, package_state_map[state], name]
 
     if proxy_host and proxy_port:
-        cmd_args.append("-DproxyHost=%s -DproxyPort=%s" % proxy_host, proxy_port)
+        cmd_args.append("-DproxyHost=%s -DproxyPort=%s" % (proxy_host, proxy_port))
 
     if url:
         cmd_args.append("--url %s" % url)