diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/ConstraintTraitForV7.php b/src/Symfony/Bridge/PhpUnit/Legacy/ConstraintTraitForV7.php
index 1e625e463a..b132f473c5 100644
--- a/src/Symfony/Bridge/PhpUnit/Legacy/ConstraintTraitForV7.php
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/ConstraintTraitForV7.php
@@ -45,7 +45,7 @@ trait ConstraintTraitForV7
 
     protected function exporter(): Exporter
     {
-        if (null !== $this->exporter) {
+        if (null === $this->exporter) {
             $this->exporter = new Exporter();
         }