diff --git a/web/redux/redux-setup.js b/web/redux/redux-setup.js
--- a/web/redux/redux-setup.js
+++ b/web/redux/redux-setup.js
@@ -65,7 +65,7 @@
   updatesCurrentAsOf: number,
   loadingStatuses: { [key: string]: { [idx: number]: LoadingStatus } },
   calendarFilters: $ReadOnlyArray<CalendarFilter>,
-  communityIDFilter: ?string,
+  calendarPickedCommunityID: ?string,
   urlPrefix: string,
   windowDimensions: WindowDimensions,
   cookie?: void,
@@ -141,14 +141,14 @@
           threadIDs,
         },
       ],
-      communityIDFilter: action.payload,
+      calendarPickedCommunityID: action.payload,
     };
   } else if (action.type === clearCalendarCommunityFilter) {
     const nonThreadFilters = nonThreadCalendarFilters(state.calendarFilters);
     return {
       ...state,
       calendarFilters: nonThreadFilters,
-      communityIDFilter: null,
+      calendarPickedCommunityID: null,
     };
   } else if (action.type === setNewSessionActionType) {
     if (
diff --git a/web/selectors/calendar-selectors.js b/web/selectors/calendar-selectors.js
--- a/web/selectors/calendar-selectors.js
+++ b/web/selectors/calendar-selectors.js
@@ -44,19 +44,27 @@
 const filterThreadIDsBelongingToCommunitySelector: (
   state: AppState,
 ) => ?$ReadOnlySet<string> = createSelector(
-  (state: AppState) => state.communityIDFilter,
+  (state: AppState) => state.calendarPickedCommunityID,
   threadInfoSelector,
-  (communityIDFilter: ?string, threadInfos: { +[id: string]: ThreadInfo }) => {
-    if (!communityIDFilter) {
+  (
+    calendarPickedCommunityID: ?string,
+    threadInfos: { +[id: string]: ThreadInfo },
+  ) => {
+    if (!calendarPickedCommunityID) {
       return null;
     }
-    return filterThreadIDsBelongingToCommunity(communityIDFilter, threadInfos);
+    return filterThreadIDsBelongingToCommunity(
+      calendarPickedCommunityID,
+      threadInfos,
+    );
   },
 );
 
 function useCommunityIsPicked(communityID: string): boolean {
-  const communityIDFilter = useSelector(state => state.communityIDFilter);
-  return communityID === communityIDFilter;
+  const calendarPickedCommunityID = useSelector(
+    state => state.calendarPickedCommunityID,
+  );
+  return communityID === calendarPickedCommunityID;
 }
 
 export {