diff --git a/curriculum/challenges/english/11-machine-learning-with-python/tensorflow/neural-networks-activation-functions.english.md b/curriculum/challenges/english/11-machine-learning-with-python/tensorflow/neural-networks-activation-functions.english.md
index 9639147a8c..2b18031b3b 100644
--- a/curriculum/challenges/english/11-machine-learning-with-python/tensorflow/neural-networks-activation-functions.english.md
+++ b/curriculum/challenges/english/11-machine-learning-with-python/tensorflow/neural-networks-activation-functions.english.md
@@ -17,7 +17,7 @@ videoId: S45tqW6BqRs
 question:
   text: Which activation function switches values between -1 and 1?
   answers:
-    - Relu (Rectified Linear Unit)
+    - ReLU (Rectified Linear Unit)
     - Tanh (Hyperbolic Tangent)
     - Sigmoid
   solution: 2