diff --git a/test/phpunit/AdherentTest.php b/test/phpunit/AdherentTest.php
index f19e88c36a6..0e0cdf3f962 100644
--- a/test/phpunit/AdherentTest.php
+++ b/test/phpunit/AdherentTest.php
@@ -180,7 +180,10 @@ class AdherentTest extends PHPUnit\Framework\TestCase
         $localobject->initAsSpecimen();
         $localobject->typeid=$fk_adherent_type;
         $result=$localobject->create($user);
-        print __METHOD__." result=".$result."\n";
+		print __METHOD__." result=".$result."\n";
+		if ($result < 0) {
+			print $localobject->error;
+		}
         $this->assertLessThan($result, 0);
 
         return $result;