diff --git a/apps/desktop/electron/event-dedupe.ts b/apps/desktop/electron/event-dedupe.ts
index ec14d67e851b..a2d12a8f2cba 100644
--- a/apps/desktop/electron/event-dedupe.ts
+++ b/apps/desktop/electron/event-dedupe.ts
@@ -2,22 +2,21 @@
 // sound, spoken replies). Every desktop window is its own renderer process, so N
 // open windows each independently react to the same backend event. The main
 // process is the one place they all share and it handles IPC serially, so it's
-// the race-free owner: the first window to claim a key within the window wins;
-// peers see it's taken and stay quiet.
-//
-// Pure + injectable clock so it's unit-testable without Electron.
+// the race-free owner: the first window to claim a key within the interval wins;
+// peers see it's taken and stay quiet. Pure + injectable clock, so it's
+// unit-testable without Electron.
 
-const DEDUPE_WINDOW_MS = 1000
+const DEDUPE_INTERVAL_MS = 1000
 
-// Returns true when `key` was already claimed within the window (caller drops
+// Returns true when `key` was already claimed within the interval (caller drops
 // this one). Self-evicting: stale keys are pruned on every call, so the map
 // can't grow unbounded.
-function createEventDeduper(windowMs = DEDUPE_WINDOW_MS) {
+export function createEventDeduper(intervalMs = DEDUPE_INTERVAL_MS) {
   const lastSeenAt = new Map<string, number>()
 
   return function isDuplicate(key: string, now = Date.now()): boolean {
     for (const [k, at] of lastSeenAt) {
-      if (now - at >= windowMs) {
+      if (now - at >= intervalMs) {
         lastSeenAt.delete(k)
       }
     }
@@ -31,5 +30,3 @@ function createEventDeduper(windowMs = DEDUPE_WINDOW_MS) {
     return false
   }
 }
-
-export { createEventDeduper, DEDUPE_WINDOW_MS }
diff --git a/apps/desktop/src/lib/completion-sound.ts b/apps/desktop/src/lib/completion-sound.ts
index f1faa150bf0f..1557c58e419e 100644
--- a/apps/desktop/src/lib/completion-sound.ts
+++ b/apps/desktop/src/lib/completion-sound.ts
@@ -462,17 +462,13 @@ export function playCompletionSound(dedupeKey?: string) {
     return
   }
 
-  if (!dedupeKey) {
-    playVariant($completionSoundVariantId.get())
+  const play = () => playVariant($completionSoundVariantId.get())
 
-    return
+  if (!dedupeKey) {
+    return play()
   }
 
-  void ownsAmbientCue(`sound:${dedupeKey}`).then(owns => {
-    if (owns) {
-      playVariant($completionSoundVariantId.get())
-    }
-  })
+  void ownsAmbientCue(`sound:${dedupeKey}`).then(owns => owns && play())
 }
 
 interface AirPuffSpec {