diff --git a/rules/type-declaration/tests/Rector/FunctionLike/ParamTypeDeclarationRector/Fixture/respect_interface.php.inc b/rules/type-declaration/tests/Rector/FunctionLike/ParamTypeDeclarationRector/Fixture/skip_parent_interface.php.inc
similarity index 68%
rename from rules/type-declaration/tests/Rector/FunctionLike/ParamTypeDeclarationRector/Fixture/respect_interface.php.inc
rename to rules/type-declaration/tests/Rector/FunctionLike/ParamTypeDeclarationRector/Fixture/skip_parent_interface.php.inc
index f088c2eac5a..2df0131e696 100644
--- a/rules/type-declaration/tests/Rector/FunctionLike/ParamTypeDeclarationRector/Fixture/respect_interface.php.inc
+++ b/rules/type-declaration/tests/Rector/FunctionLike/ParamTypeDeclarationRector/Fixture/skip_parent_interface.php.inc
@@ -2,13 +2,7 @@
 
 namespace Rector\TypeDeclaration\Tests\Rector\FunctionLike\ParamTypeDeclarationRector\Fixture;
 
-interface ParentInterface
-{
-    /**
-     * @param mixed $value
-     */
-    public function __construct($value);
-}
+use Rector\TypeDeclaration\Tests\Rector\FunctionLike\ParamTypeDeclarationRector\Source\ParentInterface;
 
 class ImplementingClass implements ParentInterface
 {
diff --git a/rules/type-declaration/tests/Rector/FunctionLike/ParamTypeDeclarationRector/Source/ParentInterface.php b/rules/type-declaration/tests/Rector/FunctionLike/ParamTypeDeclarationRector/Source/ParentInterface.php
new file mode 100644
index 00000000000..bcc0906ed06
--- /dev/null
+++ b/rules/type-declaration/tests/Rector/FunctionLike/ParamTypeDeclarationRector/Source/ParentInterface.php
@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\TypeDeclaration\Tests\Rector\FunctionLike\ParamTypeDeclarationRector\Source;
+
+interface ParentInterface
+{
+    /**
+     * @param mixed $value
+     */
+    public function __construct($value);
+}