diff --git a/pkg/runtime/serializer/json/json.go b/pkg/runtime/serializer/json/json.go
index f9fb4bbfb22..299ae854eb5 100644
--- a/pkg/runtime/serializer/json/json.go
+++ b/pkg/runtime/serializer/json/json.go
@@ -60,6 +60,9 @@ type Serializer struct {
 	pretty  bool
 }
 
+// Serializer implements Serializer
+var _ runtime.Serializer = &Serializer{}
+
 // Decode attempts to convert the provided data into YAML or JSON, extract the stored schema kind, apply the provided default gvk, and then
 // load that data into an object matching the desired schema kind or the provided into. If into is *runtime.Unknown, the raw data will be
 // extracted and no decoding will be performed. If into is not registered with the typer, then the object will be straight decoded using