diff --git a/ml/logistic_regression/logistic_regression.md b/ml/logistic_regression/logistic_regression.md
index ecc4bdd..7db6b62 100644
--- a/ml/logistic_regression/logistic_regression.md
+++ b/ml/logistic_regression/logistic_regression.md
@@ -110,7 +110,7 @@ $$
 
 $$
 cost(h_\theta(x), y) = 
-	\left\{
+	\left\\{
 	\begin{aligned}
 	-log(h_\theta(x))&, y = 1\\\\
 	-log(1 - h_\theta(x))&, y = 0