diff --git a/src/Expectation.php b/src/Expectation.php
index b54b9642..a410cf1d 100644
--- a/src/Expectation.php
+++ b/src/Expectation.php
@@ -32,6 +32,7 @@
 use Pest\Support\ExpectationPipeline;
 use PHPUnit\Architecture\Elements\ObjectDescription;
 use PHPUnit\Framework\ExpectationFailedException;
+use ReflectionEnum;
 
 /**
  * @template TValue
@@ -890,9 +891,10 @@ private function toBeBackedEnum(string $backingType): ArchExpectation
     {
         return Targeted::make(
             $this,
-            fn (ObjectDescription $object): bool => (new \ReflectionEnum($object->name))->isBacked()
-                && (string)(new \ReflectionEnum($object->name))->getBackingType() === $backingType,
-            'to be ' . $backingType . ' backed enum',
+            fn (ObjectDescription $object): bool => $object->reflectionClass->isEnum()
+                && (new ReflectionEnum($object->name))->isBacked() // @phpstan-ignore-line
+                && (string) (new ReflectionEnum($object->name))->getBackingType() === $backingType, // @phpstan-ignore-line
+            'to be '.$backingType.' backed enum',
             FileLineFinder::where(fn (string $line): bool => str_contains($line, 'class')),
         );
     }
diff --git a/src/Expectations/OppositeExpectation.php b/src/Expectations/OppositeExpectation.php
index 9a3399c2..57796f83 100644
--- a/src/Expectations/OppositeExpectation.php
+++ b/src/Expectations/OppositeExpectation.php
@@ -493,9 +493,10 @@ private function toBeBackedEnum(string $backingType): ArchExpectation
     {
         return Targeted::make(
             $this->original,
-            fn (ObjectDescription $object): bool => (new \ReflectionEnum($object->name))->isBacked()
-                && (string)(new \ReflectionEnum($object->name))->getBackingType() !== $backingType,
-            'not to be ' . $backingType . ' backed enum',
+            fn (ObjectDescription $object): bool => ! $object->reflectionClass->isEnum()
+                || ! (new \ReflectionEnum($object->name))->isBacked() // @phpstan-ignore-line
+                || (string) (new \ReflectionEnum($object->name))->getBackingType() !== $backingType, // @phpstan-ignore-line
+            'not to be '.$backingType.' backed enum',
             FileLineFinder::where(fn (string $line): bool => str_contains($line, 'class')),
         );
     }
diff --git a/tests/.snapshots/success.txt b/tests/.snapshots/success.txt
index fbec75e2..b5298688 100644
--- a/tests/.snapshots/success.txt
+++ b/tests/.snapshots/success.txt
@@ -467,6 +467,10 @@
   ✓ failures with custom message
   ✓ not failures
 
+   PASS  Tests\Features\Expect\toBeIntBackedEnum
+  ✓ enum is backed by int
+  ✓ enum is not backed by int
+
    PASS  Tests\Features\Expect\toBeInvokable
   ✓ class is invokable
   ✓ opposite class is invokable
@@ -575,6 +579,10 @@
   ✓ failures with custom message
   ✓ not failures
 
+   PASS  Tests\Features\Expect\toBeStringBackedEnum
+  ✓ enum is backed by string
+  ✓ enum is not backed by string
+
    PASS  Tests\Features\Expect\toBeStudlyCase
   ✓ pass
   ✓ failures
@@ -1404,4 +1412,4 @@
    WARN  Tests\Visual\Version
   - visual snapshot of help command output
 
-  Tests:    2 deprecated, 4 warnings, 5 incomplete, 2 notices, 13 todos, 20 skipped, 995 passed (2391 assertions)
\ No newline at end of file
+  Tests:    2 deprecated, 4 warnings, 5 incomplete, 2 notices, 13 todos, 20 skipped, 1003 passed (2407 assertions)
\ No newline at end of file
diff --git a/tests/Visual/Parallel.php b/tests/Visual/Parallel.php
index 9708303b..76a9ad3d 100644
--- a/tests/Visual/Parallel.php
+++ b/tests/Visual/Parallel.php
@@ -16,7 +16,7 @@
 
 test('parallel', function () use ($run) {
     expect($run('--exclude-group=integration'))
-        ->toContain('Tests:    1 deprecated, 4 warnings, 5 incomplete, 2 notices, 13 todos, 16 skipped, 982 passed (2372 assertions)')
+        ->toContain('Tests:    1 deprecated, 4 warnings, 5 incomplete, 2 notices, 13 todos, 16 skipped, 990 passed (2388 assertions)')
         ->toContain('Parallel: 3 processes');
 })->skipOnWindows();