diff --git a/src/ui/utils/timeline.ts b/src/ui/utils/timeline.ts
index 2f68d7bb9bd..6ecddafe046 100644
--- a/src/ui/utils/timeline.ts
+++ b/src/ui/utils/timeline.ts
@@ -273,9 +273,7 @@ export function isFocusRegionSubset(
   prevFocusRegion: FocusRegion | null,
   nextFocusRegion: FocusRegion | null
 ): boolean {
-  if (prevFocusRegion === null && nextFocusRegion === null) {
-    return true;
-  } else if (prevFocusRegion === null) {
+  if (prevFocusRegion === null) {
     // Previously the entire timeline was selected.
     // No matter what the new focus region is, it will be a subset.
     return true;