diff --git a/packages/grafana-data/src/utils/Registry.ts b/packages/grafana-data/src/utils/Registry.ts
index f6e9d08df0c..39a168f3375 100644
--- a/packages/grafana-data/src/utils/Registry.ts
+++ b/packages/grafana-data/src/utils/Registry.ts
@@ -41,7 +41,9 @@ export class Registry<T extends RegistryItem> {
   private byId = new Map<string, T>();
   private initialized = false;
 
-  constructor(private init?: () => T[]) {}
+  constructor(private init?: () => T[]) {
+    this.init = init;
+  }
 
   setInit = (init: () => T[]) => {
     if (this.initialized) {