diff --git a/nlp/bert/popart/configs/packed/packed_pretrain_tiny_512.json b/nlp/bert/popart/configs/packed/packed_pretrain_tiny_512.json
index bd05a01bd..55320c9f1 100644
--- a/nlp/bert/popart/configs/packed/packed_pretrain_tiny_512.json
+++ b/nlp/bert/popart/configs/packed/packed_pretrain_tiny_512.json
@@ -47,6 +47,6 @@
     "lr_warmup_start" : 4e-3,
     "learning_rate": 8e-3,
     "weight_decay": 1e-2,
-    "input_files": ["data/jan2020_three_seq_per_pack_with_duplications_v2/*"],
+    "input_files": ["data/packed_sequence_128/duplication_*"],
     "engine_cache": "__cache_mlperf_bert_tiny"
 }
\ No newline at end of file