diff --git a/src/Commands/BaseCommand.php b/src/Commands/BaseCommand.php
index 0423511..2eaa239 100644
--- a/src/Commands/BaseCommand.php
+++ b/src/Commands/BaseCommand.php
@@ -182,16 +182,14 @@ protected function findClassTokenIndex(array $tokens): ?int
             for ($lookahead = $index + 1; isset($tokens[$lookahead]); $lookahead++) {
                 $nextToken = $tokens[$lookahead];
 
-                if (!is_array($nextToken)) {
-                    continue;
-                }
-
-                if (in_array($nextToken[0], [T_WHITESPACE, T_COMMENT, T_DOC_COMMENT], true)) {
-                    continue;
-                }
+                if (is_array($nextToken)) {
+                    if (in_array($nextToken[0], [T_WHITESPACE, T_COMMENT, T_DOC_COMMENT], true)) {
+                        continue;
+                    }
 
-                if ($nextToken[0] === T_STRING) {
-                    return $index;
+                    if ($nextToken[0] === T_STRING) {
+                        return $index;
+                    }
                 }
 
                 break;
diff --git a/tests/Commands/GenerateInterfaceUnionsCommandTest.php b/tests/Commands/GenerateInterfaceUnionsCommandTest.php
index 9bf3ee2..4d634ce 100644
--- a/tests/Commands/GenerateInterfaceUnionsCommandTest.php
+++ b/tests/Commands/GenerateInterfaceUnionsCommandTest.php
@@ -121,6 +121,17 @@ public function testParserIgnoresClassConstantReferencesBeforeClassDeclaration()
         $this->assertSame(['App\\Interfaces\\AnimalInterface'], $info['implements']);
     }
 
+    public function testParserIgnoresClassConstantReferencesBeforeClassDeclarationWhenFollowedByEnumCase(): void
+    {
+        $info = $this->makeParserCommand()->classInfo(
+            './workbench/app/Models/AttributeClassAndEnumReferenceAnimal.php'
+        );
+
+        $this->assertSame('AttributeClassAndEnumReferenceAnimal', $info['class']);
+        $this->assertSame('App\\Models\\AttributeClassAndEnumReferenceAnimal', $info['fqcn']);
+        $this->assertSame(['App\\Interfaces\\AnimalInterface'], $info['implements']);
+    }
+
     public function testCommandFailsForInvalidInputPath(): void
     {
         $this->expectException(\RuntimeException::class);
diff --git a/workbench/app/Models/AttributeClassAndEnumReferenceAnimal.php b/workbench/app/Models/AttributeClassAndEnumReferenceAnimal.php
new file mode 100644
index 0000000..8e2eb4b
--- /dev/null
+++ b/workbench/app/Models/AttributeClassAndEnumReferenceAnimal.php
@@ -0,0 +1,12 @@
+<?php
+
+namespace App\Models;
+
+use App\Attributes\ModelInfo;
+use App\Enums\AnimalType;
+use App\Interfaces\AnimalInterface;
+
+#[ModelInfo(ParentAnimal::class, AnimalType::Dog)]
+class AttributeClassAndEnumReferenceAnimal implements AnimalInterface
+{
+}