diff --git a/pkg/acme/accounts/test/registry.go b/pkg/acme/accounts/test/registry.go
index 681e495c5..2f7fb734e 100644
--- a/pkg/acme/accounts/test/registry.go
+++ b/pkg/acme/accounts/test/registry.go
@@ -34,7 +34,7 @@ type FakeRegistry struct {
 	RemoveClientFunc        func(uid string)
 	GetClientFunc           func(uid string) (acmecl.Interface, error)
 	ListClientsFunc         func() map[string]acmecl.Interface
-	IsKeyCheckSumCachedFunc func(uid string, privateKey *rsa.PrivateKey) bool
+	IsKeyCheckSumCachedFunc func(lastPrivateKeyHash string, privateKey *rsa.PrivateKey) bool
 }
 
 func (f *FakeRegistry) AddClient(client *http.Client, uid string, config cmacme.ACMEIssuer, privateKey *rsa.PrivateKey, userAgent string) {
@@ -53,6 +53,6 @@ func (f *FakeRegistry) ListClients() map[string]acmecl.Interface {
 	return f.ListClientsFunc()
 }
 
-func (f *FakeRegistry) IsKeyCheckSumCached(uid string, privateKey *rsa.PrivateKey) bool {
-	return f.IsKeyCheckSumCachedFunc(uid, privateKey)
+func (f *FakeRegistry) IsKeyCheckSumCached(lastPrivateKeyHash string, privateKey *rsa.PrivateKey) bool {
+	return f.IsKeyCheckSumCachedFunc(lastPrivateKeyHash, privateKey)
 }
diff --git a/pkg/issuer/acme/setup_test.go b/pkg/issuer/acme/setup_test.go
index ba4a61d64..caf44044d 100644
--- a/pkg/issuer/acme/setup_test.go
+++ b/pkg/issuer/acme/setup_test.go
@@ -253,6 +253,7 @@ func TestAcme_Setup(t *testing.T) {
 				gen.SetIssuerACMEAccountURL(acmev2Prod),
 				gen.SetIssuerACMEEmail(someEmail),
 				gen.SetIssuerACMELastRegisteredEmail(someEmail),
+				gen.SetIssuerACMELastPrivateKeyHash(someString),
 				gen.AddIssuerCondition(
 					*gen.IssuerConditionFrom(readyTrueCondition,
 						gen.SetIssuerConditionStatus(cmmeta.ConditionTrue)))),
@@ -538,7 +539,7 @@ func TestAcme_Setup(t *testing.T) {
 				AddClientFunc: func(string, cmacme.ACMEIssuer, *rsa.PrivateKey, string) {
 					addClientWasCalled = true
 				},
-				IsKeyCheckSumCachedFunc: func(uid string, privateKey *rsa.PrivateKey) bool {
+				IsKeyCheckSumCachedFunc: func(lastPrivateKeyHash string, privateKey *rsa.PrivateKey) bool {
 					return true
 				},
 			}