diff --git a/server/database/mock.go b/server/database/mock.go
index 456f1e9..8104049 100644
--- a/server/database/mock.go
+++ b/server/database/mock.go
@@ -1,7 +1,6 @@
 package database
 
 import (
-	"context"
 	"fmt"
 	"time"
 
@@ -13,7 +12,6 @@ import (
 var _ CertDB = tmpDB{}
 
 type tmpDB struct {
-	ctx    context.Context
 	intern *mcache.CacheDriver
 	ttl    time.Duration
 }
@@ -24,8 +22,7 @@ func (p tmpDB) Close() error {
 }
 
 func (p tmpDB) Put(name string, cert *certificate.Resource) error {
-	p.intern.Set(name, cert, p.ttl)
-	return nil
+	return p.intern.Set(name, cert, p.ttl)
 }
 
 func (p tmpDB) Get(name string) (*certificate.Resource, error) {