diff --git a/client/landing/gutenboarding/stores/domain-suggestions/types.ts b/client/landing/gutenboarding/stores/domain-suggestions/types.ts
index 0d6494bb8125..c4366b68998a 100644
--- a/client/landing/gutenboarding/stores/domain-suggestions/types.ts
+++ b/client/landing/gutenboarding/stores/domain-suggestions/types.ts
@@ -1,9 +1,15 @@
-enum ActionType {
+/**
+ * External dependencies
+ */
+import { InputArgs } from '@wordpress/url';
+
+export enum ActionType {
 	RECEIVE_DOMAIN_SUGGESTIONS = 'RECEIVE_DOMAIN_SUGGESTIONS',
 }
-export { ActionType };
 
-export interface DomainSuggestionQuery {
+// We're extending InputArgs in order to add an index signature,
+// which we need for using `DomainSuggestionQuery` objects with `addQueryArgs`.
+export interface DomainSuggestionQuery extends InputArgs {
 	/**
 	 * True to include .blog subdomain suggestions
 	 *