diff --git a/htdocs/user/passwordforgotten.php b/htdocs/user/passwordforgotten.php
index c8725c4d248..eafaa24ac30 100644
--- a/htdocs/user/passwordforgotten.php
+++ b/htdocs/user/passwordforgotten.php
@@ -231,11 +231,11 @@ $title='';
 // Show logo (search in order: small company logo, large company logo, theme logo, common logo)
 $width=0;
 $urllogo=DOL_URL_ROOT.'/theme/login_logo.png';
-if (is_readable($conf->societe->dir_output.'/logos/thumbs/'.$mysoc->logo_small))
+if (isset($mysoc->logo_small) && is_readable($conf->societe->dir_output.'/logos/thumbs/'.$mysoc->logo_small))
 {
 	$urllogo=DOL_URL_ROOT.'/viewimage.php?modulepart=companylogo&file='.urlencode('/thumbs/'.$mysoc->logo_small);
 }
-elseif (is_readable($conf->societe->dir_output.'/logos/'.$mysoc->logo))
+elseif (isset($mysoc->logo) && is_readable($conf->societe->dir_output.'/logos/'.$mysoc->logo))
 {
 	$urllogo=DOL_URL_ROOT.'/viewimage.php?modulepart=companylogo&file='.urlencode($mysoc->logo);
 	$width=96;