diff --git a/src/Cdn77/Sniffs/Ordering/AlphabeticallyOrderedConstantsSniff.php b/src/Cdn77/Sniffs/Ordering/AlphabeticallyOrderedConstantsSniff.php
index ca0edca..8c5de28 100644
--- a/src/Cdn77/Sniffs/Ordering/AlphabeticallyOrderedConstantsSniff.php
+++ b/src/Cdn77/Sniffs/Ordering/AlphabeticallyOrderedConstantsSniff.php
@@ -15,6 +15,7 @@
 use function in_array;
 use function sort;
 use function sprintf;
+use function strtolower;
 use function ucfirst;
 use function usort;
 
@@ -36,6 +37,7 @@
  *  }
  * @phpstan-type NameShape array{
  *       content: string,
+ *       lowercaseContent: string,
  *       ptr: int
  *  }
  * @phpstan-type ValueShape array{
@@ -63,7 +65,7 @@ public function process(File $phpcsFile, mixed $stackPtr): void
 
         foreach ($namesWithValuesByVisibility as $visibility => $namesWithValues) {
             $constantNames = array_map(
-                static fn (array $nameWithValue): string => $nameWithValue['name']['content'],
+                static fn (array $nameWithValue): string => $nameWithValue['name']['lowercaseContent'],
                 $namesWithValues,
             );
             $sortedConstantNames = $constantNames;
@@ -95,7 +97,7 @@ private function fix(File $file, array $namesWithValues): void
         $sortedNameAndValueTokens = $namesWithValues;
         usort(
             $sortedNameAndValueTokens,
-            static fn (array $a, array $b): int => $a['name']['content'] <=> $b['name']['content'],
+            static fn (array $a, array $b): int => $a['name']['lowercaseContent'] <=> $b['name']['lowercaseContent'],
         );
 
         $fixer->beginChangeset();
@@ -184,7 +186,11 @@ private function findConstantName(File $phpcsFile, int $constStackPtr): array|nu
             return null;
         }
 
-        return ['content' => $tokens[$constantNameTokenPointer]['content'], 'ptr' => $constantNameTokenPointer];
+        return [
+            'content' => $tokens[$constantNameTokenPointer]['content'],
+            'lowercaseContent' => strtolower($tokens[$constantNameTokenPointer]['content']),
+            'ptr' => $constantNameTokenPointer,
+        ];
     }
 
     private function findEqualsPointer(File $phpcsFile, int $constNameStackPtr): int|null
diff --git a/tests/Sniffs/Ordering/AlphabeticallyOrderedConstantsSniffTest.php b/tests/Sniffs/Ordering/AlphabeticallyOrderedConstantsSniffTest.php
index dd0857a..ec1d05d 100644
--- a/tests/Sniffs/Ordering/AlphabeticallyOrderedConstantsSniffTest.php
+++ b/tests/Sniffs/Ordering/AlphabeticallyOrderedConstantsSniffTest.php
@@ -19,7 +19,7 @@ public function testErrors(): void
         $expectedErrors = [
             9 => AlphabeticallyOrderedConstantsSniff::CodeIncorrectConstantOrder,
             19 => AlphabeticallyOrderedConstantsSniff::CodeIncorrectConstantOrder,
-            24 => AlphabeticallyOrderedConstantsSniff::CodeIncorrectConstantOrder,
+            25 => AlphabeticallyOrderedConstantsSniff::CodeIncorrectConstantOrder,
         ];
         $possibleLines = array_keys($expectedErrors);
         $errors = $file->getErrors();
diff --git a/tests/Sniffs/Ordering/data/AlphabeticallyOrderedConstantsSniffTest.fixed.inc b/tests/Sniffs/Ordering/data/AlphabeticallyOrderedConstantsSniffTest.fixed.inc
index c6f37a8..9026183 100644
--- a/tests/Sniffs/Ordering/data/AlphabeticallyOrderedConstantsSniffTest.fixed.inc
+++ b/tests/Sniffs/Ordering/data/AlphabeticallyOrderedConstantsSniffTest.fixed.inc
@@ -19,7 +19,8 @@ final class TestClass
     protected const E = 'e';
     protected const F = 'f';
     protected const G = 'g';
-    protected const H = 'h';
+    protected const Ha = 'h';
+    protected const HB = 'h';
 
     private const I = 'i';
     private const J = 'j';
diff --git a/tests/Sniffs/Ordering/data/AlphabeticallyOrderedConstantsSniffTest.inc b/tests/Sniffs/Ordering/data/AlphabeticallyOrderedConstantsSniffTest.inc
index 572a352..fe8aa1e 100644
--- a/tests/Sniffs/Ordering/data/AlphabeticallyOrderedConstantsSniffTest.inc
+++ b/tests/Sniffs/Ordering/data/AlphabeticallyOrderedConstantsSniffTest.inc
@@ -16,10 +16,11 @@ final class TestClass
     public const D = [123, 'test'];
     public const B = 'b';
 
-    protected const H = 'h';
     protected const E = 'e';
     protected const G = 'g';
     protected const F = 'f';
+    protected const HB = 'h';
+    protected const Ha = 'h';
 
     private const K = 'k';
     private const J = 'j';