diff --git a/Riot/Managers/PushNotification/PushNotificationService.m b/Riot/Managers/PushNotification/PushNotificationService.m
index bef062452..5edec7a00 100644
--- a/Riot/Managers/PushNotification/PushNotificationService.m
+++ b/Riot/Managers/PushNotification/PushNotificationService.m
@@ -577,9 +577,11 @@ Matrix session observer used to detect new opened sessions.
             dispatch_group_t dispatchGroup = dispatch_group_create();
             
             dispatch_group_enter(dispatchGroup);
+            session.spaceService.graphUpdateEnabled = NO;
             //  Not continuing in completion block here, because PushKit mandates reporting a new call in the same run loop.
             //  'handleBackgroundSyncCacheIfRequiredWithCompletion' is processing to-device events synchronously.
             [session handleBackgroundSyncCacheIfRequiredWithCompletion:^{
+                session.spaceService.graphUpdateEnabled = YES;
                 dispatch_group_leave(dispatchGroup);
             }];
             
diff --git a/changelog.d/4919.bugfix b/changelog.d/4919.bugfix
new file mode 100644
index 000000000..c364a0603
--- /dev/null
+++ b/changelog.d/4919.bugfix
@@ -0,0 +1 @@
+fixed App may not start in 1.6.0
\ No newline at end of file