diff --git a/pkg/cri/config/config_unix.go b/pkg/cri/config/config_unix.go
index 8c511bc5d..3ca123236 100644
--- a/pkg/cri/config/config_unix.go
+++ b/pkg/cri/config/config_unix.go
@@ -75,7 +75,7 @@ func DefaultConfig() PluginConfig {
 			Runtimes: map[string]Runtime{
 				"runc": {
 					Type:    "io.containerd.runc.v2",
-					Options: tree,
+					Options: tree.ToMap(),
 				},
 			},
 			DisableSnapshotAnnotations: true,