diff --git a/README.md b/README.md
index ada8397..a5b4f52 100755
--- a/README.md
+++ b/README.md
@@ -46,6 +46,7 @@ A. Karpathy, G. Toderici, S. Shetty, T. Leung, R. Sukthankar, and L. Fei-Fei, La
 1. Compile 3D CNN:
     - Compile C3D_sample_rate, which is used for the proposal network and classification network
     - Compile C3D_overlap_loss, which is used for the localization network
+    - Note that do not need to make unit test cases.
     - Hint: please refer to [C3D-v1.0](https://github.com/facebook/C3D/tree/master/C3D-v1.0), [C3D-v1.1](https://github.com/facebook/C3D/tree/master/C3D-v1.1), and [Caffe](https://github.com/BVLC/caffe) for more details about compilation
 2. Download pre-trained models to `./models/` from [Dropbox](https://www.dropbox.com/s/01o0o74w5jsxzjo/models.7z?dl=0)