diff --git a/pkg/operator/ceph/cluster/controller.go b/pkg/operator/ceph/cluster/controller.go
index 06b724b3b..e6e851f8a 100644
--- a/pkg/operator/ceph/cluster/controller.go
+++ b/pkg/operator/ceph/cluster/controller.go
@@ -57,7 +57,7 @@ const (
 
 const (
 	// DefaultClusterName states the default name of the rook-cluster if not provided.
-	DefaultClusterName         = "rook"
+	DefaultClusterName         = "rook-ceph"
 	clusterDeleteRetryInterval = 2 //seconds
 	clusterDeleteMaxRetries    = 15
 )
diff --git a/pkg/operator/ceph/provisioner/provisioner_test.go b/pkg/operator/ceph/provisioner/provisioner_test.go
index 5b757cf80..b879a2bac 100644
--- a/pkg/operator/ceph/provisioner/provisioner_test.go
+++ b/pkg/operator/ceph/provisioner/provisioner_test.go
@@ -120,7 +120,7 @@ func TestParseClassParametersDefault(t *testing.T) {
 	assert.Nil(t, err)
 
 	assert.Equal(t, "testPool", provConfig.pool)
-	assert.Equal(t, "rook", provConfig.clusterNamespace)
+	assert.Equal(t, "rook-ceph", provConfig.clusterNamespace)
 	assert.Equal(t, "", provConfig.fstype)
 }