diff --git a/pkg/local_object_storage/writecache/flush.go b/pkg/local_object_storage/writecache/flush.go
index 17dcc110..c4e4b3b3 100644
--- a/pkg/local_object_storage/writecache/flush.go
+++ b/pkg/local_object_storage/writecache/flush.go
@@ -138,13 +138,11 @@ func (c *cache) flushSmallObjects(ctx context.Context) {
 			}
 		}
 
+		c.modeMtx.RUnlock()
 		if count == 0 {
-			c.modeMtx.RUnlock()
 			break
 		}
 
-		c.modeMtx.RUnlock()
-
 		c.log.Debug(logs.WritecacheTriedToFlushItemsFromWritecache,
 			zap.Int("count", count),
 			zap.String("start", base58.Encode(lastKey)))