diff --git a/src/plugins/initiatives/initiative.js b/src/plugins/initiatives/initiative.js
index 2046e97..3458b16 100644
--- a/src/plugins/initiatives/initiative.js
+++ b/src/plugins/initiatives/initiative.js
@@ -1,11 +1,10 @@
 // @flow
 
+import {type URL} from "../../core/references";
 import {type NodeAddressT, NodeAddress} from "../../core/graph";
 import {type NodeWeight} from "../../core/weights";
 import {initiativeNodeType} from "./declaration";
 
-export type URL = string;
-
 // Composite ID, used as input for NodeAddressT.
 export opaque type InitiativeId = string[];
 
diff --git a/src/plugins/initiatives/initiativesDirectory.js b/src/plugins/initiatives/initiativesDirectory.js
index 59bde22..c27a1b8 100644
--- a/src/plugins/initiatives/initiativesDirectory.js
+++ b/src/plugins/initiatives/initiativesDirectory.js
@@ -3,6 +3,7 @@
 import path from "path";
 import fs from "fs-extra";
 import globby from "globby";
+import {type URL} from "../../core/references";
 import {type NodeAddressT, NodeAddress} from "../../core/graph";
 import {type Compatible, fromCompat, toCompat} from "../../util/compat";
 import {compatReader} from "../../backend/compatIO";
@@ -16,7 +17,6 @@ import {
   type InitiativeWeight,
   type InitiativeId,
   type InitiativeRepository,
-  type URL,
   createId,
   addressFromId,
 } from "./initiative";