diff --git a/x-pack/plugins/uptime/public/state/reducers/selected_filters.ts b/x-pack/plugins/uptime/public/state/reducers/selected_filters.ts
index 108d516d17ab1..921754c93078a 100644
--- a/x-pack/plugins/uptime/public/state/reducers/selected_filters.ts
+++ b/x-pack/plugins/uptime/public/state/reducers/selected_filters.ts
@@ -11,7 +11,7 @@ import {
   SelectedFilters,
 } from '../actions/selected_filters';
 
-const initialState = null;
+const initialState: SelectedFilters | null = null;
 
 export function selectedFiltersReducer(
   state = initialState,
diff --git a/x-pack/plugins/uptime/public/state/selectors/__tests__/index.test.ts b/x-pack/plugins/uptime/public/state/selectors/__tests__/index.test.ts
index 2eb0f1e8cb0ee..b1885ddeeba3f 100644
--- a/x-pack/plugins/uptime/public/state/selectors/__tests__/index.test.ts
+++ b/x-pack/plugins/uptime/public/state/selectors/__tests__/index.test.ts
@@ -107,6 +107,7 @@ describe('state selectors', () => {
         loading: false,
       },
     },
+    selectedFilters: null,
   };
 
   it('selects base path from state', () => {