diff --git a/test/test_joules.rb b/test/test_joules.rb
index f720f73..da34439 100644
--- a/test/test_joules.rb
+++ b/test/test_joules.rb
@@ -35,7 +35,7 @@ def test_angular_velocity_v1_zero_division
   end
 
   def test_angular_velocity_v1_example
-  	assert_in_epsilon(3, angular_velocity_v1(9, 3), EPSILON)
+    assert_in_epsilon(3, angular_velocity_v1(9, 3), EPSILON)
   end
 end