diff --git a/htdocs/core/class/html.formcontract.class.php b/htdocs/core/class/html.formcontract.class.php
index 5db615f4654..1909a4fb6c3 100644
--- a/htdocs/core/class/html.formcontract.class.php
+++ b/htdocs/core/class/html.formcontract.class.php
@@ -104,7 +104,7 @@ class FormContract
 				while ($i < $num) {
 					$obj = $this->db->fetch_object($resql);
 					// If we ask to filter on a company and user has no permission to see all companies and project is linked to another company, we hide project.
-					if ($socid > 0 && (empty($obj->fk_soc) || $obj->fk_soc == $socid) && !$user->rights->societe->lire) {
+					if ($socid > 0 && (empty($obj->fk_soc) || $obj->fk_soc == $socid) && empty($user->rights->societe->lire)) {
 						// Do nothing
 					} else {
 						$labeltoshow = dol_trunc($obj->ref, 18);
diff --git a/htdocs/core/class/html.formintervention.class.php b/htdocs/core/class/html.formintervention.class.php
index b9564c6aa52..60656128b64 100644
--- a/htdocs/core/class/html.formintervention.class.php
+++ b/htdocs/core/class/html.formintervention.class.php
@@ -99,7 +99,7 @@ class FormIntervention
 				while ($i < $num) {
 					$obj = $this->db->fetch_object($resql);
 					// If we ask to filter on a company and user has no permission to see all companies and project is linked to another company, we hide project.
-					if ($socid > 0 && (empty($obj->fk_soc) || $obj->fk_soc == $socid) && !$user->rights->societe->lire) {
+					if ($socid > 0 && (empty($obj->fk_soc) || $obj->fk_soc == $socid) && empty($user->rights->societe->lire)) {
 						// Do nothing
 					} else {
 						$labeltoshow = dol_trunc($obj->ref, 18);
diff --git a/htdocs/core/class/html.formprojet.class.php b/htdocs/core/class/html.formprojet.class.php
index 18b42c597bf..34ea7b0a2e8 100644
--- a/htdocs/core/class/html.formprojet.class.php
+++ b/htdocs/core/class/html.formprojet.class.php
@@ -207,7 +207,7 @@ class FormProjets
 				while ($i < $num) {
 					$obj = $this->db->fetch_object($resql);
 					// If we ask to filter on a company and user has no permission to see all companies and project is linked to another company, we hide project.
-					if ($socid > 0 && (empty($obj->fk_soc) || $obj->fk_soc == $socid) && !$user->rights->societe->lire) {
+					if ($socid > 0 && (empty($obj->fk_soc) || $obj->fk_soc == $socid) && empty($user->rights->societe->lire)) {
 						// Do nothing
 					} else {
 						if ($discard_closed == 1 && $obj->fk_statut == 2 && $obj->rowid != $selected) { // We discard closed except if selected
diff --git a/htdocs/core/lib/security.lib.php b/htdocs/core/lib/security.lib.php
index 554fcba9370..37e98c0d91a 100644
--- a/htdocs/core/lib/security.lib.php
+++ b/htdocs/core/lib/security.lib.php
@@ -279,12 +279,12 @@ function restrictedArea($user, $features, $objectid = 0, $tableandshare = '', $f
 		}
 
 		if ($feature == 'societe') {
-			if (!$user->rights->societe->lire && !$user->rights->fournisseur->lire) {
+			if (empty($user->rights->societe->lire) && !$user->rights->fournisseur->lire) {
 				$readok = 0;
 				$nbko++;
 			}
 		} elseif ($feature == 'contact') {
-			if (!$user->rights->societe->contact->lire) {
+			if (empty($user->rights->societe->contact->lire)) {
 				$readok = 0;
 				$nbko++;
 			}
@@ -370,12 +370,12 @@ function restrictedArea($user, $features, $objectid = 0, $tableandshare = '', $f
 	if ($wemustcheckpermissionforcreate || $wemustcheckpermissionfordeletedraft) {
 		foreach ($featuresarray as $feature) {
 			if ($feature == 'contact') {
-				if (!$user->rights->societe->contact->creer) {
+				if (empty($user->rights->societe->contact->creer)) {
 					$createok = 0;
 					$nbko++;
 				}
 			} elseif ($feature == 'produit|service') {
-				if (!$user->rights->produit->creer && !$user->rights->service->creer) {
+				if (empty($user->rights->produit->creer) && empty($user->rights->service->creer)) {
 					$createok = 0;
 					$nbko++;
 				}