diff --git a/train.py b/train.py
index 3c3513a3..69b7756d 100644
--- a/train.py
+++ b/train.py
@@ -59,7 +59,7 @@
 
 train_dataset = dataset.lmdbDataset(root=opt.trainroot)
 assert train_dataset
-if not opt.random_sample:
+if opt.random_sample:
     sampler = dataset.randomSequentialSampler(train_dataset, opt.batchSize)
 else:
     sampler = None