diff --git a/src/keria/testing/testing_helper.py b/src/keria/testing/testing_helper.py
index 3eb3862..2b8b48a 100644
--- a/src/keria/testing/testing_helper.py
+++ b/src/keria/testing/testing_helper.py
@@ -374,9 +374,9 @@ def inceptRandy(bran, count=1, sith="1", wits=None, toad="0"):
 
         creator = keeping.RandyCreator()
         signers = creator.create(count=count)
-        prxs = [encrypter.encrypt(prim=signer).qb64 for signer in signers]
+        prxs = [encrypter.encrypt(matter=signer).qb64 for signer in signers]
         nsigners = creator.create(count=count)
-        nxts = [encrypter.encrypt(prim=signer).qb64 for signer in nsigners]
+        nxts = [encrypter.encrypt(matter=signer).qb64 for signer in nsigners]
 
         keys = [signer.verfer.qb64 for signer in signers]
         ndigs = [coring.Diger(ser=nsigner.verfer.qb64b) for nsigner in nsigners]
diff --git a/tests/app/test_aiding.py b/tests/app/test_aiding.py
index e270eb0..b66f719 100644
--- a/tests/app/test_aiding.py
+++ b/tests/app/test_aiding.py
@@ -793,8 +793,8 @@ def test_identifier_collection_end(helpers):
                                  ndigs=[diger.qb64 for diger in ndigs])
 
         sigers = [signer.sign(ser=serder.raw, index=0).qb64 for signer in signers]
-        prxs = [encrypter.encrypt(prim=signer).qb64 for signer in signers]
-        nxts = [encrypter.encrypt(prim=signer).qb64 for signer in nsigners]
+        prxs = [encrypter.encrypt(matter=signer).qb64 for signer in signers]
+        nxts = [encrypter.encrypt(matter=signer).qb64 for signer in nsigners]
 
         body = {'rot': serder.ked,
                 'sigs': sigers,
@@ -883,8 +883,8 @@ def test_identifier_collection_end(helpers):
                                  )
 
         sigers = [signer.sign(ser=serder.raw, index=0).qb64 for signer in signers]
-        prxs = [encrypter.encrypt(prim=signer).qb64 for signer in signers]
-        nxts = [encrypter.encrypt(prim=signer).qb64 for signer in nsigners]
+        prxs = [encrypter.encrypt(matter=signer).qb64 for signer in signers]
+        nxts = [encrypter.encrypt(matter=signer).qb64 for signer in nsigners]
 
         body = {'rot': serder.ked,
                 'sigs': sigers,