diff --git a/CHANGELOG.md b/CHANGELOG.md
index 08efefd..5c41e99 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,11 @@
 CHANGELOG
 =========
 
+3.8.0 
+------
+
+* remove pattern added from the Expression Violation message. 
+
 3.7.0 (unreleased)
 ------------------
 
diff --git a/ModelDescriber/Annotations/SymfonyConstraintAnnotationReader.php b/ModelDescriber/Annotations/SymfonyConstraintAnnotationReader.php
index 73f8449..f944ee0 100644
--- a/ModelDescriber/Annotations/SymfonyConstraintAnnotationReader.php
+++ b/ModelDescriber/Annotations/SymfonyConstraintAnnotationReader.php
@@ -69,8 +69,6 @@ class SymfonyConstraintAnnotationReader
             } elseif ($annotation instanceof Assert\Choice) {
                 $values = $annotation->callback ? call_user_func(is_array($annotation->callback) ? $annotation->callback : [$reflectionProperty->class, $annotation->callback]) : $annotation->choices;
                 $property->setEnum(array_values($values));
-            } elseif ($annotation instanceof Assert\Expression) {
-                $this->appendPattern($property, $annotation->message);
             } elseif ($annotation instanceof Assert\Range) {
                 $property->setMinimum($annotation->min);
                 $property->setMaximum($annotation->max);
diff --git a/Tests/Describer/ApiPlatformDescriberTest.php b/Tests/Describer/ApiPlatformDescriberTest.php
index 5e83a03..dacfb53 100644
--- a/Tests/Describer/ApiPlatformDescriberTest.php
+++ b/Tests/Describer/ApiPlatformDescriberTest.php
@@ -45,7 +45,7 @@ class ApiPlatformDescriberTest extends AbstractDescriberTest
         $this->assertEquals($expectedApi->toArray(), $this->getSwaggerDoc()->toArray());
     }
 
-    protected function setUp()
+    protected function setUp(): void
     {
         $this->documentation = new Documentation(new ResourceNameCollection(['dummy' => 'dummy']));
 
diff --git a/Tests/Functional/FunctionalTest.php b/Tests/Functional/FunctionalTest.php
index 0e18c3f..7d2db9a 100644
--- a/Tests/Functional/FunctionalTest.php
+++ b/Tests/Functional/FunctionalTest.php
@@ -366,7 +366,6 @@ class FunctionalTest extends WebTestCase
                 ],
                 'propertyExpression' => [
                     'type' => 'integer',
-                    'pattern' => 'If this is a tech post, the category should be either php or symfony!',
                 ],
                 'propertyRange' => [
                     'type' => 'integer',