diff --git a/cmd/iam-etcd-store.go b/cmd/iam-etcd-store.go
index ff79bd799..9879e194d 100644
--- a/cmd/iam-etcd-store.go
+++ b/cmd/iam-etcd-store.go
@@ -70,7 +70,11 @@ type IAMEtcdStore struct {
 }
 
 func newIAMEtcdStore(client *etcd.Client, usersSysType UsersSysType) *IAMEtcdStore {
-	return &IAMEtcdStore{client: client, usersSysType: usersSysType}
+	return &IAMEtcdStore{
+		iamCache:     newIamCache(),
+		client:       client,
+		usersSysType: usersSysType,
+	}
 }
 
 func (ies *IAMEtcdStore) rlock() *iamCache {