diff --git a/models/bvlc_reference_caffenet/train_val.prototxt b/models/bvlc_reference_caffenet/train_val.prototxt
index c79472e09ab..e3e427968ab 100644
--- a/models/bvlc_reference_caffenet/train_val.prototxt
+++ b/models/bvlc_reference_caffenet/train_val.prototxt
@@ -45,7 +45,7 @@ layer {
 #    mean_value: 104
 #    mean_value: 117
 #    mean_value: 123
-#    mirror: true
+#    mirror: false
 #  }
   data_param {
     source: "examples/imagenet/ilsvrc12_val_lmdb"