diff --git a/android/app/src/main/java/com/labfytools/trainlog/data/SyncRequestOutbox.kt b/android/app/src/main/java/com/labfytools/trainlog/data/SyncRequestOutbox.kt
index 768c0dc..b3d468e 100644
--- a/android/app/src/main/java/com/labfytools/trainlog/data/SyncRequestOutbox.kt
+++ b/android/app/src/main/java/com/labfytools/trainlog/data/SyncRequestOutbox.kt
@@ -14,6 +14,11 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 
 sealed interface SyncRequestResult {
+    /** The full-generation coordinator completed both durable peer ACKs. */
+    data class Completed(
+        val runId: String,
+    ) : SyncRequestResult
+
     data class Requested(
         val requestId: String,
     ) : SyncRequestResult
diff --git a/android/app/src/main/java/com/labfytools/trainlog/ui/SyncScreen.kt b/android/app/src/main/java/com/labfytools/trainlog/ui/SyncScreen.kt
index 741fadd..5797da1 100644
--- a/android/app/src/main/java/com/labfytools/trainlog/ui/SyncScreen.kt
+++ b/android/app/src/main/java/com/labfytools/trainlog/ui/SyncScreen.kt
@@ -55,7 +55,7 @@ internal suspend fun publishBundleAndRequest(
         } catch (_: Exception) { false }
         if (!enabled) return@withContext SyncRequestResult.Error("Invalid generation synchronization opt-in.")
         return@withContext when (val result = SyncGenerationForegroundCoordinator(repository).run(canonicalExchangeDirectory())) {
-            is ForegroundGenerationResult.Completed -> SyncRequestResult.Requested(result.runId)
+            is ForegroundGenerationResult.Completed -> SyncRequestResult.Completed(result.runId)
             is ForegroundGenerationResult.Error -> SyncRequestResult.Error(result.message)
         }
     }
@@ -336,6 +336,14 @@ fun SyncScreen(
                     coroutineScope.launch {
                         try {
                             when (val result = publishBundleAndRequest(repository, exporter, requestOutbox)) {
+                                is SyncRequestResult.Completed -> {
+                                    // The generation coordinator has already consumed the
+                                    // desktop return and published its durable ACK. Waiting
+                                    // for the legacy receipt here would leave a false spinner.
+                                    success = true
+                                    pendingRequestId = null
+                                    status = strings.getString(R.string.sync_generation_complete)
+                                }
                                 is SyncRequestResult.Requested -> {
                                     success = true
                                     pendingRequestId = result.requestId
diff --git a/android/app/src/main/res/values-en/strings.xml b/android/app/src/main/res/values-en/strings.xml
index dfbf59c..0a7c7d2 100644
--- a/android/app/src/main/res/values-en/strings.xml
+++ b/android/app/src/main/res/values-en/strings.xml
@@ -75,6 +75,7 @@
     <string name="sync_flow_description">Android → PC then PC → Android, in one operation.</string>
     <string name="sync_authorize_first">File access is required. Authorize Documents/Trainlog first.</string>
     <string name="sync_request_sent">Request sent · waiting for the PC…</string>
+    <string name="sync_generation_complete">Synchronization completed on Android and PC.</string>
     <string name="sync_android_unsupported">Android is not supported.</string>
     <string name="sync_folder_section">EXCHANGE FOLDER</string>
     <string name="sync_authorize_folder">Authorize access to the Trainlog folder</string>
diff --git a/android/app/src/main/res/values/strings.xml b/android/app/src/main/res/values/strings.xml
index 24f3075..8d14940 100644
--- a/android/app/src/main/res/values/strings.xml
+++ b/android/app/src/main/res/values/strings.xml
@@ -75,6 +75,7 @@
     <string name="sync_flow_description">Android → PC puis PC → Android, en une seule opération.</string>
     <string name="sync_authorize_first">Accès fichiers requis. Autorisez d’abord Documents/Trainlog.</string>
     <string name="sync_request_sent">Demande envoyée · attente du PC…</string>
+    <string name="sync_generation_complete">Synchronisation terminée sur Android et PC.</string>
     <string name="sync_android_unsupported">Android non supporté.</string>
     <string name="sync_folder_section">DOSSIER D’ÉCHANGE</string>
     <string name="sync_authorize_folder">Autoriser l’accès au dossier Trainlog</string>