diff --git a/vector/src/main/java/im/vector/app/features/home/room/list/RoomListSectionBuilder.kt b/vector/src/main/java/im/vector/app/features/home/room/list/RoomListSectionBuilder.kt
index f929366a5e..46591a0ca6 100644
--- a/vector/src/main/java/im/vector/app/features/home/room/list/RoomListSectionBuilder.kt
+++ b/vector/src/main/java/im/vector/app/features/home/room/list/RoomListSectionBuilder.kt
@@ -378,7 +378,7 @@ class RoomListSectionBuilder(
                     activeSpaceUpdaters.add(object : RoomListViewModel.ActiveSpaceQueryUpdater {
                         override fun updateForSpaceId(roomId: String?) {
                             filteredPagedRoomSummariesLive.queryParams = roomQueryParams.copy(
-                                    spaceFilter = roomId?.toActiveSpaceOrOrphanRooms()
+                                    spaceFilter = roomId.toActiveSpaceOrOrphanRooms()
                             )
                             liveQueryParams.update { filteredPagedRoomSummariesLive.queryParams }
                         }
@@ -444,7 +444,7 @@ class RoomListSectionBuilder(
         return when (spaceFilter) {
             RoomListViewModel.SpaceFilterStrategy.ORPHANS_IF_SPACE_NULL -> {
                 copy(
-                        spaceFilter = currentSpace?.toActiveSpaceOrOrphanRooms()
+                        spaceFilter = currentSpace.toActiveSpaceOrOrphanRooms()
                 )
             }
             RoomListViewModel.SpaceFilterStrategy.ALL_IF_SPACE_NULL -> {
diff --git a/vector/src/main/java/im/vector/app/features/home/room/list/home/HomeRoomListViewModel.kt b/vector/src/main/java/im/vector/app/features/home/room/list/home/HomeRoomListViewModel.kt
index 3226ed24f2..55d955cb37 100644
--- a/vector/src/main/java/im/vector/app/features/home/room/list/home/HomeRoomListViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/home/room/list/home/HomeRoomListViewModel.kt
@@ -124,7 +124,7 @@ class HomeRoomListViewModel @AssistedInject constructor(
     private fun getSpaceFilter(selectedSpaceId: String?, strategy: RoomListViewModel.SpaceFilterStrategy): SpaceFilter? {
         return when (strategy) {
             RoomListViewModel.SpaceFilterStrategy.ORPHANS_IF_SPACE_NULL -> {
-                selectedSpaceId?.toActiveSpaceOrOrphanRooms()
+                selectedSpaceId.toActiveSpaceOrOrphanRooms()
             }
             RoomListViewModel.SpaceFilterStrategy.ALL_IF_SPACE_NULL -> {
                 selectedSpaceId?.let { SpaceFilter.ActiveSpace(it) }