diff --git a/src/darwin/Framework/CHIP/CHIPPersistentStorageDelegateBridge.h b/src/darwin/Framework/CHIP/CHIPPersistentStorageDelegateBridge.h
index 395ba3cdf44186..a497500129ce24 100644
--- a/src/darwin/Framework/CHIP/CHIPPersistentStorageDelegateBridge.h
+++ b/src/darwin/Framework/CHIP/CHIPPersistentStorageDelegateBridge.h
@@ -35,8 +35,8 @@ class CHIPPersistentStorageDelegateBridge : public chip::PersistentStorageDelega
     CHIP_ERROR SyncDeleteKeyValue(const char * key) override;
 
 private:
-    _Nullable id<CHIPPersistentStorageDelegate> mDelegate;
-    _Nullable dispatch_queue_t mWorkQueue;
+    id<CHIPPersistentStorageDelegate> mDelegate;
+    dispatch_queue_t mWorkQueue;
 };
 
 NS_ASSUME_NONNULL_END
diff --git a/src/darwin/Framework/CHIP/CHIPPersistentStorageDelegateBridge.mm b/src/darwin/Framework/CHIP/CHIPPersistentStorageDelegateBridge.mm
index ccd7e2b0af0d33..7e7dcaf8289526 100644
--- a/src/darwin/Framework/CHIP/CHIPPersistentStorageDelegateBridge.mm
+++ b/src/darwin/Framework/CHIP/CHIPPersistentStorageDelegateBridge.mm
@@ -53,8 +53,8 @@
 
 CHIPPersistentStorageDelegateBridge::CHIPPersistentStorageDelegateBridge(id<CHIPPersistentStorageDelegate> delegate)
     : mDelegate(delegate)
+    , mWorkQueue(dispatch_queue_create("com.zigbee.chip.framework.storage.workqueue", DISPATCH_QUEUE_SERIAL))
 {
-    mWorkQueue = dispatch_queue_create("com.zigbee.chip.framework.storage.workqueue", DISPATCH_QUEUE_SERIAL);
 }
 
 CHIPPersistentStorageDelegateBridge::~CHIPPersistentStorageDelegateBridge(void) {}