diff --git a/setup/setup_instruction.md b/setup/setup_instruction.md
index 6afcf0c9..f8e4359b 100644
--- a/setup/setup_instruction.md
+++ b/setup/setup_instruction.md
@@ -20,7 +20,7 @@ os.environ['TF_CPP_MIN_LOG_LEVEL']='2'
 
 - If you want to install TensorFlow from sources, keep in mind that TensorFlow doesn't officially support building TensorFlow on Windows. On Windows, you may try using the highly experimental Bazel on Windows or TensorFlow CMake build.
 
-Below is a simpler instruction on how to install TensorFlow on macOS. If you have any problem installing Tensorflow, feel free to post it on [Piazza](piazza.com/stanford/winter2018/cs20)
+Below is a simpler instruction on how to install TensorFlow on macOS. If you have any problem installing Tensorflow, feel free to post it on [Piazza](https://piazza.com/stanford/winter2018/cs20)
 
 If you get “permission denied” error in any command, use “sudo” in front of that command.
 
@@ -84,4 +84,4 @@ If you have problem with using Matplotlib in virtual environment, here are two s
 Go there and create a file ~/.matplotlib/matplotlibrc there and add the following code: ```backend: TkAgg```
 2. After importing matplotlib, simply add: ```matplotlib.use("TkAgg")```
 
-If you run into more problems, feel free to post your questions on [Piazza](https://piazza.com/stanford/winter2018/cs20) or email us cs20-win1718-staff@lists.stanford.edu.
\ No newline at end of file
+If you run into more problems, feel free to post your questions on [Piazza](https://piazza.com/stanford/winter2018/cs20) or email us cs20-win1718-staff@lists.stanford.edu.