diff --git a/README.md b/README.md
index 2672767..e4aa932 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,8 @@
 # Mutual Recursion
 
-Tail call optimization for mutually (and directly) recursive functions in Ruby.
+Tail call optimization for mutually (indirectly) and directly recursive functions in Ruby.
 
-The current design uses a trampoline. However, it is implemented in a way that still allows a tail recursive function to return a Proc as its terminal value.
+The current design uses a trampoline. However, it is implemented in a way that still allows a tail recursive function to easily return a Proc as its terminal value.
 
 ### examples
 ```ruby
diff --git a/mutual_recursion.gemspec b/mutual_recursion.gemspec
index dfffbf4..b8a0c82 100644
--- a/mutual_recursion.gemspec
+++ b/mutual_recursion.gemspec
@@ -3,10 +3,10 @@
 Gem::Specification.new do |s|
   s.name        = 'mutual_recursion'
   s.version     = '0.0.1'
-  s.date        = '2019-01-26'
+  s.date        = '2019-01-27'
   s.summary     = 'Mutual Recursion for Ruby'
-  s.description = 'Tail call optimization for mutually (and directly) recursive functions.'
-  s.authors     = ['Mike']
+  s.description = 'Tail call optimization for mutually and directly recursive functions.'
+  s.authors     = ['Mike Cifelli']
   s.files       = ['lib/mutual_recursion.rb']
   s.homepage    = 'https://gitlab.com/mike-cifelli/mutual_recursion'
   s.license     = 'MIT'
diff --git a/test/mutual_recursion_test.rb b/test/mutual_recursion_test.rb
index 3b10d44..6462e11 100644
--- a/test/mutual_recursion_test.rb
+++ b/test/mutual_recursion_test.rb
@@ -14,7 +14,7 @@ class InventoryTest < Minitest::Test
     tail_call { two(x, y + 1) }
   end
 
-  def two(x, y)
+  def two(x, y = 0)
     tail_call { one(x - 1, y) }
   end
 
@@ -34,14 +34,14 @@ class InventoryTest < Minitest::Test
     tail_call { proc_returning(x - 1, y + 1) }
   end
 
-  def bad_return
+  def inauthentic_tail_call
     tail_call do
       Class.new do
         attr_reader :value, :block
 
         def initialize
           @value = 99
-          @block = proc { 25 }
+          @block = proc { MutualRecursion.terminal_value(100) }
         end
       end.new
     end
@@ -63,8 +63,10 @@ class InventoryTest < Minitest::Test
   end
 
   def test_mutual_tail_recursion
-    tail = one(50_000)
-    assert_equal(50_001, tail.invoke)
+    tail_one = one(50_000)
+    tail_two = two(50_000)
+    assert_equal(50_001, tail_one.invoke)
+    assert_equal(50_000, tail_two.invoke)
   end
 
   def test_direct_tail_recursion
@@ -82,8 +84,8 @@ class InventoryTest < Minitest::Test
     assert_kind_of(Proc, tail.invoke)
   end
 
-  def test_non_tail_call_detected
-    tail = bad_return
+  def test_inauthentic_tail_call_detected
+    tail = inauthentic_tail_call
     assert_raises(MissingTailCallError) { tail.invoke }
   end