diff --git a/src/AnnotationGenerator/ConstraintAnnotationGenerator.php b/src/AnnotationGenerator/ConstraintAnnotationGenerator.php
index 971f8126..20c7ddf8 100644
--- a/src/AnnotationGenerator/ConstraintAnnotationGenerator.php
+++ b/src/AnnotationGenerator/ConstraintAnnotationGenerator.php
@@ -66,7 +66,7 @@ public function generateFieldAnnotations(string $className, string $fieldName):
             }
         }
 
-        if (!$field['isNullable']) {
+        if ($this->config['validator']['assertType'] && !$field['isNullable']) {
             $asserts[] = '@Assert\NotNull';
         }