diff --git a/logic/init.lua b/logic/init.lua
index 1313152..a85369f 100644
--- a/logic/init.lua
+++ b/logic/init.lua
@@ -10,7 +10,11 @@ function EvensHandValidator.isValidCardRanks(cardRanksFromHand)
         return false
     end
 
-    local validCardRanks = {'2', '4', '6', '8', '10'}
+    -- Card values in Balatro use 'T' to denote Ten. The validator previously
+    -- expected the literal string '10', which meant actual hands containing a
+    -- ten would fail validation. Align with the game's representation by using
+    -- 'T' instead of '10'.
+    local validCardRanks = {'2', '4', '6', '8', 'T'}
     local uniqueCardRanks = {}
     local uniqueCardRanksCounted = 0
     
diff --git a/my_test_suite.lua b/my_test_suite.lua
index db57d90..b31e403 100644
--- a/my_test_suite.lua
+++ b/my_test_suite.lua
@@ -4,15 +4,15 @@ local Utils = require('utils')
 local EvensHandValidator = require('logic')
 
 function testIsValidCardRanksFromStrictEvensHandShouldBeTrue()
-    lu.assertIsTrue(EvensHandValidator.isValidCardRanks({'2', '10', '8', '6', '4'}), nil)
+    lu.assertIsTrue(EvensHandValidator.isValidCardRanks({'2', 'T', '8', '6', '4'}), nil)
 end
 
 function testIsValidCardRanksForEvensHandCardWithAThreeShouldBeFalse()
-    lu.assertIsFalse(EvensHandValidator.isValidCardRanks({'3', '10', '8', '6', '4'}), nil)
+    lu.assertIsFalse(EvensHandValidator.isValidCardRanks({'3', 'T', '8', '6', '4'}), nil)
 end
 
 function testIsValidCardRanksWithEvensHandCardWithAJackShouldBeFalse()
-    lu.assertIsFalse(EvensHandValidator.isValidCardRanks({'J', '10', '8', '6', '4'}), nil)
+    lu.assertIsFalse(EvensHandValidator.isValidCardRanks({'J', 'T', '8', '6', '4'}), nil)
 end
 
 
@@ -21,19 +21,19 @@ function testIsValidCardRanksWithEvensHandCardWithoutAnyEvenCardsShouldBeFalse()
 end
 
 function testIsValidCardRanksWithNonEvensHandCardShouldBeFalse()
-    lu.assertIsFalse(EvensHandValidator.isValidCardRanks({'3', '10', '8', '6', '4'}), nil)
+    lu.assertIsFalse(EvensHandValidator.isValidCardRanks({'3', 'T', '8', '6', '4'}), nil)
 end
 
 function testIsValidCardRanksFromEvensHandWithFourCardsShouldBeFalse()
-    lu.assertIsFalse(EvensHandValidator.isValidCardRanks({'2', '10', '8', '4'}), nil)
+    lu.assertIsFalse(EvensHandValidator.isValidCardRanks({'2', 'T', '8', '4'}), nil)
 end
 
 function testIsValidCardRanksFromEvensHandWithDuplicateIncompleteSetOfCardsShouldBeFalse()
-    lu.assertIsFalse(EvensHandValidator.isValidCardRanks({'10', '10', '8', '4'}), nil)
+    lu.assertIsFalse(EvensHandValidator.isValidCardRanks({'T', 'T', '8', '4'}), nil)
 end
 
 function testIsValidCardRanksFromEvensHandWithDuplicateYetCorrectCardRanksShouldBeFalse()
-    lu.assertIsFalse(EvensHandValidator.isValidCardRanks({'10', '10', '8', '4', '2'}), nil)
+    lu.assertIsFalse(EvensHandValidator.isValidCardRanks({'T', 'T', '8', '4', '2'}), nil)
 end
 
 os.exit( lu.LuaUnit.run() )
\ No newline at end of file