diff --git a/koans/about_strings.rb b/koans/about_strings.rb
index db3289a..48190dd 100644
--- a/koans/about_strings.rb
+++ b/koans/about_strings.rb
@@ -128,7 +128,7 @@ EOS
     assert_equal __, string
   end
 
-  def test_any_ruby_expression_my_be_interpolated
+  def test_any_ruby_expression_may_be_interpolated
     string = "The square root of 5 is #{Math.sqrt(5)}"
     assert_equal __, string
   end