diff --git a/htdocs/compta/facture/class/facture.class.php b/htdocs/compta/facture/class/facture.class.php
index b5e18948b38bb..502ec7a74da36 100644
--- a/htdocs/compta/facture/class/facture.class.php
+++ b/htdocs/compta/facture/class/facture.class.php
@@ -1783,7 +1783,7 @@ function delete($user, $notrigger=0, $idwarehouse=-1)
 		// Test to avoid invoice deletion (allowed if draft)
 		$test = $this->is_erasable();
 
-		if ($test <= 0) return $test;
+		if ($test <= 0) return 0;
 
 		$error=0;