diff --git a/lib/ansible/modules/network/aci/aci_rest.py b/lib/ansible/modules/network/aci/aci_rest.py
index fd38c6a3a48..4858b0aa09a 100644
--- a/lib/ansible/modules/network/aci/aci_rest.py
+++ b/lib/ansible/modules/network/aci/aci_rest.py
@@ -133,7 +133,7 @@ EXAMPLES = r'''
   aci_rest:
     host: apic
     username: admin
-    private_key: pki/{{ aci_username}}.key
+    private_key: pki/{{ aci_username }}.key
     validate_certs: no
     path: /api/mo/uni.xml
     method: post