diff --git a/silkaj/cert.py b/silkaj/cert.py
index 46c14a984e7b3bbd8da0d7686bd2f050646f5dc5..1b2ad08fb8f00aac79b36132b34d833c724df1f7 100644
--- a/silkaj/cert.py
+++ b/silkaj/cert.py
@@ -33,12 +33,12 @@ from silkaj.constants import SUCCESS_EXIT_STATUS
 
 
 @command("cert", help="Send certification")
-@argument("id_to_certify")
+@argument("uid_pubkey_to_certify")
 @coroutine
-async def send_certification(id_to_certify):
+async def send_certification(uid_pubkey_to_certify):
     client = ClientInstance().client
     idty_to_certify, pubkey_to_certify, send_certs = await wot.choose_identity(
-        id_to_certify
+        uid_pubkey_to_certify
     )
 
     # Authentication
diff --git a/silkaj/wot.py b/silkaj/wot.py
index 4de61ac3dbcd4a3e663c46c52413c1bc3eb0323d..efe87ddd7c80d3d7588f76beb19d15c1e906502d 100644
--- a/silkaj/wot.py
+++ b/silkaj/wot.py
@@ -49,9 +49,9 @@ def get_sent_certifications(signed, time_first_block, params):
     "wot",
     help="Check received and sent certifications and consult the membership status of any given identity",
 )
-@click.argument("id")
+@click.argument("uid_pubkey")
 @coroutine
-async def received_sent_certifications(id):
+async def received_sent_certifications(uid_pubkey):
     """
     get searched id
     get id of received and sent certifications
@@ -60,7 +60,7 @@ async def received_sent_certifications(id):
     client = ClientInstance().client
     first_block = await client(blockchain.block, 1)
     time_first_block = first_block["time"]
-    identity, pubkey, signed = await choose_identity(id)
+    identity, pubkey, signed = await choose_identity(uid_pubkey)
     certifications = OrderedDict()
     params = await BlockchainParams().params
     req = await client(wot.requirements, pubkey)
@@ -83,7 +83,7 @@ async def received_sent_certifications(id):
     nbr_sent_certs = len(certifications["sent"]) if "sent" in certifications else 0
     print(
         "{0} ({1}) from block #{2}\nreceived {3} and sent {4}/{5} certifications:\n{6}\n{7}\n".format(
-            id,
+            identity["uid"],
             pubkey[:5] + "…",
             identity["meta"]["timestamp"][:15] + "…",
             len(certifications["received"]),