diff --git a/LeStorage/ApiCallCollection.swift b/LeStorage/ApiCallCollection.swift
index 1886c64..519e7c4 100644
--- a/LeStorage/ApiCallCollection.swift
+++ b/LeStorage/ApiCallCollection.swift
@@ -199,7 +199,7 @@ actor ApiCallCollection<T: SyncedStorable>: SomeCallCollection {
                     if T.copyServerResponse {
                         StoreCenter.main.updateLocalInstances(results)
                     }
-                    self._attemptLoops = -1
+//                    self._attemptLoops = -1
                 }
             } catch {
                 Logger.error(error)
@@ -217,8 +217,12 @@ actor ApiCallCollection<T: SyncedStorable>: SomeCallCollection {
     /// Wait for an exponentionnaly long time depending on the number of attemps
     fileprivate func _wait() async {
         
+        #if DEBUG
+        let seconds = 2 * self._attemptLoops
+        #else
         let delay = pow(2, self._attemptLoops)
         let seconds = NSDecimalNumber(decimal: delay).intValue
+        #endif
         Logger.log("\(T.resourceName()): wait for \(seconds) sec")
         do {
             try await Task.sleep(until: .now + .seconds(seconds))
diff --git a/LeStorage/StoredCollection+Sync.swift b/LeStorage/StoredCollection+Sync.swift
index a1e5bcc..fbd6200 100644
--- a/LeStorage/StoredCollection+Sync.swift
+++ b/LeStorage/StoredCollection+Sync.swift
@@ -276,7 +276,7 @@ extension StoredCollection: SomeSyncedCollection where T : SyncedStorable {
             if instance.lastUpdate > localInstance.lastUpdate {
                 self.updateItem(instance, index: index)
             } else {
-                Logger.log("dont update: \(instance.lastUpdate.timeIntervalSince1970) / \(localInstance.lastUpdate.timeIntervalSince1970)")
+                Logger.log("do not update: \(instance.lastUpdate.timeIntervalSince1970) / local:  \(localInstance.lastUpdate.timeIntervalSince1970)")
             }
         } else { // insert
             if shared {