diff --git a/ab_testing/ex_ttest.py b/ab_testing/ex_ttest.py
index 4afd2e54..69aaf35d 100644
--- a/ab_testing/ex_ttest.py
+++ b/ab_testing/ex_ttest.py
@@ -1,4 +1,4 @@
-# From the course: Bayesin Machine Learning in Python: A/B Testing
+# From the course: Bayesian Machine Learning in Python: A/B Testing
 # https://deeplearningcourses.com/c/bayesian-machine-learning-in-python-ab-testing
 # https://www.udemy.com/bayesian-machine-learning-in-python-ab-testing
 from __future__ import print_function, division
@@ -42,4 +42,4 @@
 df = (s1_sq / N1 + s2_sq / N2)**2 / ( (s1_sq*s1_sq) / (N1*N1 * nu1) + (s2_sq*s2_sq) / (N2*N2 * nu2) )
 p = (1 - stats.t.cdf(np.abs(t), df=df))*2
 print("Manual Welch t-test")
-print("t:\t", t, "p:\t", p)
\ No newline at end of file
+print("t:\t", t, "p:\t", p)