diff --git a/README.md b/README.md
index a5231a0..2e2f147 100644
--- a/README.md
+++ b/README.md
@@ -1553,7 +1553,6 @@ Take coding challenges every day, as many as you can.
     - [ ] [Tensorflow (video)](https://www.youtube.com/watch?v=oZikw5k_2FM)
     - [ ] [Tensorflow Tutorials](https://www.tensorflow.org/versions/r0.11/tutorials/index.html)
     - [ ] [Practical Guide to implementing Neural Networks in Python](using Theano)])http://www.analyticsvidhya.com/blog/2016/04/neural-networks-python-theano/)
-    - [ ] [Vector calculus](https://www.youtube.com/watch?v=tDtYAddb4o4)
     - Courses: (videos)
         - [ ] [Great starter course: Machine Learning](https://www.coursera.org/learn/machine-learning)
               - [videos only](https://www.youtube.com/playlist?list=PLZ9qNFMHZ-A4rycgrgOYma6zxF4BZGGPW)