diff --git a/tests/Scoper/PhpScoperSpecTest.php b/tests/Scoper/PhpScoperSpecTest.php
index 33d2f3b8..77acec6b 100644
--- a/tests/Scoper/PhpScoperSpecTest.php
+++ b/tests/Scoper/PhpScoperSpecTest.php
@@ -14,7 +14,6 @@
 
 namespace Humbug\PhpScoper\Scoper;
 
-use Error;
 use Humbug\PhpScoper\Configuration\SymbolsConfiguration;
 use Humbug\PhpScoper\Container;
 use Humbug\PhpScoper\PhpParser\TraverserFactory;
@@ -22,6 +21,7 @@
 use Humbug\PhpScoper\Scoper\Spec\SpecFormatter;
 use Humbug\PhpScoper\Scoper\Spec\SpecNormalizer;
 use Humbug\PhpScoper\Scoper\Spec\SpecParser;
+use Humbug\PhpScoper\Scoper\Spec\UnparsableSpec;
 use Humbug\PhpScoper\Symbol\EnrichedReflector;
 use Humbug\PhpScoper\Symbol\Reflector;
 use Humbug\PhpScoper\Symbol\SymbolsRegistry;
@@ -109,15 +109,7 @@ public function test_can_scope_valid_files(
                 $error,
             );
         } catch (Throwable $throwable) {
-            throw new Error(
-                sprintf(
-                    'Could not parse the spec %s: %s',
-                    $spec,
-                    $throwable->getMessage().$throwable->getTraceAsString(),
-                ),
-                0,
-                $throwable,
-            );
+            throw UnparsableSpec::create($spec, $throwable);
         }
 
         $specMessage = SpecFormatter::createSpecMessage(
@@ -204,15 +196,7 @@ private static function handlePhpParserError(
         PhpParserError $error,
     ): never {
         if (!str_starts_with($error->getMessage(), 'Syntax error,')) {
-            throw new Error(
-                sprintf(
-                    'Could not parse the spec %s: %s',
-                    $spec,
-                    $error->getMessage(),
-                ),
-                0,
-                $error,
-            );
+            throw UnparsableSpec::create($spec, $error);
         }
 
         $lines = array_values(array_filter(explode("\n", $contents)));
diff --git a/tests/Scoper/Spec/UnparsableSpec.php b/tests/Scoper/Spec/UnparsableSpec.php
new file mode 100644
index 00000000..0ccb8008
--- /dev/null
+++ b/tests/Scoper/Spec/UnparsableSpec.php
@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the humbug/php-scoper package.
+ *
+ * Copyright (c) 2017 Théo FIDRY <theo.fidry@gmail.com>,
+ *                    Pádraic Brady <padraic.brady@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Humbug\PhpScoper\Scoper\Spec;
+
+use DomainException;
+use Throwable;
+use function sprintf;
+
+final class UnparsableSpec extends DomainException
+{
+    public static function create(
+        string $specTitle,
+        Throwable $throwable,
+    ): self {
+        return new self(
+            sprintf(
+                'Could not parse the spec "%s": %s',
+                $specTitle,
+                $throwable->getMessage(),
+            ),
+            previous: $throwable,
+        );
+    }
+}