diff --git a/src/Reflection/ReflectionClassConstant.php b/src/Reflection/ReflectionClassConstant.php
index c70e76c39..336230d9b 100644
--- a/src/Reflection/ReflectionClassConstant.php
+++ b/src/Reflection/ReflectionClassConstant.php
@@ -15,6 +15,10 @@
 
 class ReflectionClassConstant
 {
+    public const IS_PUBLIC    = 1;
+    public const IS_PROTECTED = 2;
+    public const IS_PRIVATE   = 4;
+
     private bool $valueWasCached = false;
 
     /** @var scalar|array<scalar>|null const value */
diff --git a/test/unit/Reflection/ReflectionClassTest.php b/test/unit/Reflection/ReflectionClassTest.php
index eb226fa8a..360207579 100644
--- a/test/unit/Reflection/ReflectionClassTest.php
+++ b/test/unit/Reflection/ReflectionClassTest.php
@@ -16,7 +16,6 @@
 use Qux;
 use Reflection as CoreReflection;
 use ReflectionClass as CoreReflectionClass;
-use ReflectionClassConstant as CoreReflectionClassConstant;
 use ReflectionMethod as CoreReflectionMethod;
 use ReflectionProperty as CoreReflectionProperty;
 use Roave\BetterReflection\Reflection\Exception\NotAClassReflection;
@@ -1817,13 +1816,13 @@ public function testGetConstantsReturnsInheritedConstants(): void
     public function getConstantsWithFilterDataProvider(): array
     {
         return [
-            [CoreReflectionClassConstant::IS_PUBLIC, 3],
-            [CoreReflectionClassConstant::IS_PROTECTED, 1],
-            [CoreReflectionClassConstant::IS_PRIVATE, 1],
+            [ReflectionClassConstant::IS_PUBLIC, 3],
+            [ReflectionClassConstant::IS_PROTECTED, 1],
+            [ReflectionClassConstant::IS_PRIVATE, 1],
             [
-                CoreReflectionClassConstant::IS_PUBLIC |
-                CoreReflectionClassConstant::IS_PROTECTED |
-                CoreReflectionClassConstant::IS_PRIVATE,
+                ReflectionClassConstant::IS_PUBLIC |
+                ReflectionClassConstant::IS_PROTECTED |
+                ReflectionClassConstant::IS_PRIVATE,
                 5,
             ],
         ];