diff --git a/demo.py b/demo.py
index 27c827b..2eea972 100644
--- a/demo.py
+++ b/demo.py
@@ -39,10 +39,10 @@ def run():
     initial_b = 0 # initial y-intercept guess
     initial_m = 0 # initial slope guess
     num_iterations = 1000
-    print "Starting gradient descent at b = {0}, m = {1}, error = {2}".format(initial_b, initial_m, compute_error_for_line_given_points(initial_b, initial_m, points))
-    print "Running..."
+    print("Starting gradient descent at b = {0}, m = {1}, error = {2}".format(initial_b, initial_m, compute_error_for_line_given_points(initial_b, initial_m, points)))
+    print("Running...")
     [b, m] = gradient_descent_runner(points, initial_b, initial_m, learning_rate, num_iterations)
-    print "After {0} iterations b = {1}, m = {2}, error = {3}".format(num_iterations, b, m, compute_error_for_line_given_points(b, m, points))
+    print("After {0} iterations b = {1}, m = {2}, error = {3}".format(num_iterations, b, m, compute_error_for_line_given_points(b, m, points)))
 
 if __name__ == '__main__':
     run()