diff --git a/resources/skins.vector.search/App.vue b/resources/skins.vector.search/App.vue
index e34ebad84..825741f0a 100644
--- a/resources/skins.vector.search/App.vue
+++ b/resources/skins.vector.search/App.vue
@@ -162,10 +162,7 @@ module.exports = exports = defineComponent( {
 		 * @param {string} value
 		 */
 		onInput: function ( value ) {
-			const searchApiUrl = mw.config.get( 'wgVectorSearchApiUrl',
-					mw.config.get( 'wgScriptPath' ) + '/rest.php'
-				),
-				query = value.trim();
+			const query = value.trim();
 
 			this.currentSearchQuery = query;
 
@@ -177,7 +174,7 @@ module.exports = exports = defineComponent( {
 
 			instrumentation.listeners.onFetchStart();
 
-			restClient.fetchByTitle( query, searchApiUrl, 10, this.showDescription ).fetch
+			restClient.fetchByTitle( query, 10, this.showDescription ).fetch
 				.then( ( data ) => {
 					// Only use these results if they're still relevant
 					// If currentSearchQuery !== query, these results are for a previous search
diff --git a/resources/skins.vector.search/restSearchClient.js b/resources/skins.vector.search/restSearchClient.js
index 6e5e03b02..a944a929a 100644
--- a/resources/skins.vector.search/restSearchClient.js
+++ b/resources/skins.vector.search/restSearchClient.js
@@ -66,8 +66,8 @@ function adaptApiResponse( config, query, restResponse, showDescription ) {
 /**
  * @callback fetchByTitle
  * @param {string} query The search term.
- * @param {string} searchApiUrl The URL to rest.php
  * @param {number} [limit] Maximum number of results.
+ * @param {boolean} [showDescription] Whether descriptions should be added to the results.
  * @return {AbortableSearchFetch}
  */
 
@@ -85,7 +85,10 @@ function restSearchClient( config ) {
 		/**
 		 * @type {fetchByTitle}
 		 */
-		fetchByTitle: ( q, searchApiUrl, limit = 10, showDescription = true ) => {
+		fetchByTitle: ( q, limit = 10, showDescription = true ) => {
+			const searchApiUrl = config.get( 'wgVectorSearchApiUrl',
+				config.get( 'wgScriptPath' ) + '/rest.php'
+			);
 			const params = { q, limit };
 			const url = searchApiUrl + '/v1/search/title?' + $.param( params );
 			const result = fetchJson( url, {
diff --git a/tests/jest/restSearchClient.test.js b/tests/jest/restSearchClient.test.js
index 295e72dcb..816e88ea3 100644
--- a/tests/jest/restSearchClient.test.js
+++ b/tests/jest/restSearchClient.test.js
@@ -11,6 +11,9 @@ const configMock = {
 		if ( key === 'wgScript' ) {
 			return '/w/index.php';
 		}
+		if ( key === 'wgVectorSearchApiUrl' ) {
+			return 'https://en.wikipedia.org/w/rest.php';
+		}
 		return fallback;
 	} ),
 	set: jest.fn()
@@ -66,7 +69,6 @@ describe( 'restApiSearchClient', () => {
 
 		const searchResult = await restSearchClient( configMock ).fetchByTitle(
 			'media',
-			'https://en.wikipedia.org/w/rest.php',
 			2
 		).fetch;
 
@@ -98,8 +100,7 @@ describe( 'restApiSearchClient', () => {
 		fetchMock.mockOnce( JSON.stringify( restResponse ) );
 
 		const searchResult = await restSearchClient( configMock ).fetchByTitle(
-			'thereIsNothingLikeThis',
-			'https://en.wikipedia.org/w/rest.php'
+			'thereIsNothingLikeThis'
 		).fetch;
 
 		/* eslint-disable-next-line compat/compat */
@@ -122,8 +123,7 @@ describe( 'restApiSearchClient', () => {
 			fetchMock.mockRejectOnce( new Error( 'failed' ) );
 
 			await expect( restSearchClient( configMock ).fetchByTitle(
-				'anything',
-				'https://en.wikipedia.org/w/rest.php'
+				'anything'
 			).fetch ).rejects.toThrow( 'failed' );
 		} );
 	}