diff --git a/.github/workflows/psalm.yml b/.github/workflows/psalm.yml
index e48b24f..d5ee8a7 100644
--- a/.github/workflows/psalm.yml
+++ b/.github/workflows/psalm.yml
@@ -1,6 +1,10 @@
 name: Psalm
 
 on:
+  pull_request:
+    paths:
+      - '**.php'
+      - 'psalm.xml.dist'
   push:
     paths:
       - '**.php'
diff --git a/src/PropertyFactory.php b/src/PropertyFactory.php
index 642a2c2..f2e23a0 100644
--- a/src/PropertyFactory.php
+++ b/src/PropertyFactory.php
@@ -91,9 +91,15 @@ protected function extractDocBlockType(ReflectionProperty $property): ?string
 
             if ($type->isCollection()) {
                 // Patch for Symfony 6
+                /**
+                 * @psalm-suppress RedundantCondition
+                 */
                 if (method_exists($type, 'getCollectionValueTypes')) {
                     $collectionType = $type->getCollectionValueTypes()[0];
                 } else {
+                    /**
+                     * @psalm-suppress UndefinedMethod
+                     */
                     $collectionType = $type->getCollectionValueType();
                 }
                 $className = $collectionType->getClassName() ?? $collectionType->getBuiltinType();