diff --git a/exercises/practice/roman-numerals/.meta/spec_generator.lua b/exercises/practice/roman-numerals/.meta/spec_generator.lua
new file mode 100644
index 0000000..5723187
--- /dev/null
+++ b/exercises/practice/roman-numerals/.meta/spec_generator.lua
@@ -0,0 +1,9 @@
+return {
+  module_name = 'roman_numerals',
+
+  generate_test = function(case)
+    local template = [[
+      assert.are.equal('%s', roman_numerals.to_roman(%s))]]
+    return template:format(case.expected, case.input.number)
+  end
+}
diff --git a/exercises/practice/roman-numerals/.meta/tests.toml b/exercises/practice/roman-numerals/.meta/tests.toml
index 57c6c4b..709011b 100644
--- a/exercises/practice/roman-numerals/.meta/tests.toml
+++ b/exercises/practice/roman-numerals/.meta/tests.toml
@@ -84,5 +84,8 @@ description = "3000 is MMM"
 [3bc4b41c-c2e6-49d9-9142-420691504336]
 description = "3001 is MMMI"
 
+[2f89cad7-73f6-4d1b-857b-0ef531f68b7e]
+description = "3888 is MMMDCCCLXXXVIII"
+
 [4e18e96b-5fbb-43df-a91b-9cb511fe0856]
 description = "3999 is MMMCMXCIX"
diff --git a/exercises/practice/roman-numerals/roman-numerals_spec.lua b/exercises/practice/roman-numerals/roman-numerals_spec.lua
index 4944eaa..16004fb 100644
--- a/exercises/practice/roman-numerals/roman-numerals_spec.lua
+++ b/exercises/practice/roman-numerals/roman-numerals_spec.lua
@@ -1,103 +1,111 @@
-local to_roman = require('roman-numerals').to_roman
+local roman_numerals = require('roman-numerals')
 
 describe('roman-numerals', function()
-  it('converts 1', function()
-    assert.are.equal('I', to_roman(1))
+  it('1 is i', function()
+    assert.are.equal('I', roman_numerals.to_roman(1))
   end)
 
-  it('converts 2', function()
-    assert.are.equal('II', to_roman(2))
+  it('2 is ii', function()
+    assert.are.equal('II', roman_numerals.to_roman(2))
   end)
 
-  it('converts 3', function()
-    assert.are.equal('III', to_roman(3))
+  it('3 is iii', function()
+    assert.are.equal('III', roman_numerals.to_roman(3))
   end)
 
-  it('converts 4', function()
-    assert.are.equal('IV', to_roman(4))
+  it('4 is iv', function()
+    assert.are.equal('IV', roman_numerals.to_roman(4))
   end)
 
-  it('converts 5', function()
-    assert.are.equal('V', to_roman(5))
+  it('5 is v', function()
+    assert.are.equal('V', roman_numerals.to_roman(5))
   end)
 
-  it('converts 6', function()
-    assert.are.equal('VI', to_roman(6))
+  it('6 is vi', function()
+    assert.are.equal('VI', roman_numerals.to_roman(6))
   end)
 
-  it('converts 9', function()
-    assert.are.equal('IX', to_roman(9))
+  it('9 is ix', function()
+    assert.are.equal('IX', roman_numerals.to_roman(9))
   end)
 
-  it('converts 16', function()
-    assert.are.equal('XVI', to_roman(16))
+  it('16 is xvi', function()
+    assert.are.equal('XVI', roman_numerals.to_roman(16))
   end)
 
-  it('converts 27', function()
-    assert.are.equal('XXVII', to_roman(27))
+  it('27 is xxvii', function()
+    assert.are.equal('XXVII', roman_numerals.to_roman(27))
   end)
 
-  it('converts 48', function()
-    assert.are.equal('XLVIII', to_roman(48))
+  it('48 is xlviii', function()
+    assert.are.equal('XLVIII', roman_numerals.to_roman(48))
   end)
 
-  it('converts 59', function()
-    assert.are.equal('LIX', to_roman(59))
+  it('49 is xlix', function()
+    assert.are.equal('XLIX', roman_numerals.to_roman(49))
   end)
 
-  it('converts 66', function()
-    assert.are.equal('LXVI', to_roman(66))
+  it('59 is lix', function()
+    assert.are.equal('LIX', roman_numerals.to_roman(59))
   end)
 
-  it('converts 93', function()
-    assert.are.equal('XCIII', to_roman(93))
+  it('66 is lxvi', function()
+    assert.are.equal('LXVI', roman_numerals.to_roman(66))
   end)
 
-  it('converts 141', function()
-    assert.are.equal('CXLI', to_roman(141))
+  it('93 is xciii', function()
+    assert.are.equal('XCIII', roman_numerals.to_roman(93))
   end)
 
-  it('converts 163', function()
-    assert.are.equal('CLXIII', to_roman(163))
+  it('141 is cxli', function()
+    assert.are.equal('CXLI', roman_numerals.to_roman(141))
   end)
 
-  it('converts 166', function()
-    assert.are.equal('CLXVI', to_roman(166))
+  it('163 is clxiii', function()
+    assert.are.equal('CLXIII', roman_numerals.to_roman(163))
   end)
 
-  it('converts 402', function()
-    assert.are.equal('CDII', to_roman(402))
+  it('166 is clxvi', function()
+    assert.are.equal('CLXVI', roman_numerals.to_roman(166))
   end)
 
-  it('converts 575', function()
-    assert.are.equal('DLXXV', to_roman(575))
+  it('402 is cdii', function()
+    assert.are.equal('CDII', roman_numerals.to_roman(402))
   end)
 
-  it('converts 666', function()
-    assert.are.equal('DCLXVI', to_roman(666))
+  it('575 is dlxxv', function()
+    assert.are.equal('DLXXV', roman_numerals.to_roman(575))
   end)
 
-  it('converts 911', function()
-    assert.are.equal('CMXI', to_roman(911))
+  it('666 is dclxvi', function()
+    assert.are.equal('DCLXVI', roman_numerals.to_roman(666))
   end)
 
-  it('converts 1024', function()
-    assert.are.equal('MXXIV', to_roman(1024))
+  it('911 is cmxi', function()
+    assert.are.equal('CMXI', roman_numerals.to_roman(911))
   end)
 
-  it('converts 1666', function()
-    assert.are.equal('MDCLXVI', to_roman(1666))
+  it('1024 is mxxiv', function()
+    assert.are.equal('MXXIV', roman_numerals.to_roman(1024))
   end)
 
-  it('converts 3000', function()
-    assert.are.equal('MMM', to_roman(3000))
+  it('1666 is mdclxvi', function()
+    assert.are.equal('MDCLXVI', roman_numerals.to_roman(1666))
   end)
 
-  it('converts 3001', function()
-    assert.are.equal('MMMI', to_roman(3001))
+  it('3000 is mmm', function()
+    assert.are.equal('MMM', roman_numerals.to_roman(3000))
   end)
 
-  it('converts 3999', function()
-    assert.are.equal('MMMCMXCIX', to_roman(3999))
+  it('3001 is mmmi', function()
+    assert.are.equal('MMMI', roman_numerals.to_roman(3001))
+  end)
+
+  it('3888 is mmmdccclxxxviii', function()
+    assert.are.equal('MMMDCCCLXXXVIII', roman_numerals.to_roman(3888))
+  end)
+
+  it('3999 is mmmcmxcix', function()
+    assert.are.equal('MMMCMXCIX', roman_numerals.to_roman(3999))
   end)
 end)