diff --git a/htdocs/core/modules/modProjet.class.php b/htdocs/core/modules/modProjet.class.php
index a34ea519d2a..20137d7c905 100644
--- a/htdocs/core/modules/modProjet.class.php
+++ b/htdocs/core/modules/modProjet.class.php
@@ -315,7 +315,7 @@ class modProjet extends DolibarrModules
 		// End add extra fields
 		$this->import_fieldshidden_array[$r] = array('t.fk_user_creat'=>'user->id', 'extra.fk_object'=>'lastrowid-'.MAIN_DB_PREFIX.'projet'); // aliastable.field => ('user->id' or 'lastrowid-'.tableparent)
 		$this->import_convertvalue_array[$r] = array(
-			't.ref'=>array('rule'=>'getrefifauto', 'class'=>(!getDolGlobalString('PROJECT_ADDON') ? 'mod_project_simple' : $conf->global->PROJECT_ADDON), 'path'=>"/core/modules/project/".(!getDolGlobalString('PROJECT_ADDON') ? 'mod_project_simple' : $conf->global->PROJECT_ADDON).'.php'),
+			't.ref' => array('rule' => 'getrefifauto', 'class' => getDolGlobalString('PROJECT_ADDON', 'mod_project_simple'), 'path' => "/core/modules/project/".getDolGlobalString('PROJECT_ADDON', 'mod_project_simple').'.php'),
 			't.fk_soc' => array(
 				'rule'    => 'fetchidfromref',
 				'file'    => '/societe/class/societe.class.php',
diff --git a/htdocs/core/modules/project/doc/doc_generic_project_odt.modules.php b/htdocs/core/modules/project/doc/doc_generic_project_odt.modules.php
index 3168aa7261c..41e3a5247b3 100644
--- a/htdocs/core/modules/project/doc/doc_generic_project_odt.modules.php
+++ b/htdocs/core/modules/project/doc/doc_generic_project_odt.modules.php
@@ -407,7 +407,7 @@ class doc_generic_project_odt extends ModelePDFProjects
 		// List of directories area
 		$texte .= '<tr><td>';
 		$texttitle = $langs->trans("ListOfDirectories");
-		$listofdir = explode(',', preg_replace('/[\r\n]+/', ',', trim($conf->global->PROJECT_ADDON_PDF_ODT_PATH)));
+		$listofdir = explode(',', preg_replace('/[\r\n]+/', ',', trim(getDolGlobalString('PROJECT_ADDON_PDF_ODT_PATH'))));
 		$listoffiles = array();
 		foreach ($listofdir as $key => $tmpdir) {
 			$tmpdir = trim($tmpdir);
diff --git a/htdocs/emailcollector/class/emailcollector.class.php b/htdocs/emailcollector/class/emailcollector.class.php
index 24c452541e9..ab10ad402da 100644
--- a/htdocs/emailcollector/class/emailcollector.class.php
+++ b/htdocs/emailcollector/class/emailcollector.class.php
@@ -3092,7 +3092,7 @@ class EmailCollector extends CommonObject
 								if (empty($projecttocreate->ref)) {
 									// Get next Ref
 									$defaultref = '';
-									$modele = !getDolGlobalString('PROJECT_ADDON') ? 'mod_project_simple' : $conf->global->PROJECT_ADDON;
+									$modele = getDolGlobalString('PROJECT_ADDON', 'mod_project_simple');
 
 									// Search template files
 									$file = '';
diff --git a/htdocs/projet/admin/project.php b/htdocs/projet/admin/project.php
index d0d560d8dd2..cd092f0be52 100644
--- a/htdocs/projet/admin/project.php
+++ b/htdocs/projet/admin/project.php
@@ -175,14 +175,14 @@ if ($action == 'updateMaskTask') {
 } elseif ($action == 'del') {
 	$ret = delDocumentModel($value, $type);
 	if ($ret > 0) {
-		if ($conf->global->PROJECT_ADDON_PDF == "$value") {
+		if (getDolGlobalString('PROJECT_ADDON_PDF') == "$value") {
 			dolibarr_del_const($db, 'PROJECT_ADDON_PDF', $conf->entity);
 		}
 	}
 } elseif ($action == 'deltask') {
 	$ret = delDocumentModel($value, 'project_task');
 	if ($ret > 0) {
-		if ($conf->global->PROJECT_TASK_ADDON_PDF == "$value") {
+		if (getDolGlobalString('PROJECT_TASK_ADDON_PDF') == "$value") {
 			dolibarr_del_const($db, 'PROJECT_TASK_ADDON_PDF', $conf->entity);
 		}
 	}
@@ -354,7 +354,7 @@ foreach ($dirmodels as $reldir) {
 						print '</td>'."\n";
 
 						print '<td class="center">';
-						if ($conf->global->PROJECT_ADDON == 'mod_'.$classname) {
+						if (getDolGlobalString('PROJECT_ADDON') == 'mod_'.$classname) {
 							print img_picto($langs->trans("Activated"), 'switch_on');
 						} else {
 							print '<a class="reposition" href="'.$_SERVER["PHP_SELF"].'?action=setmod&token='.newToken().'&value=mod_'.$classname.'" alt="'.$langs->trans("Default").'">'.img_picto($langs->trans("Disabled"), 'switch_off').'</a>';
@@ -594,7 +594,7 @@ foreach ($dirmodels as $reldir) {
 
 								// Default
 								print "<td class=\"center\">";
-								if ($conf->global->PROJECT_ADDON_PDF == "$name") {
+								if (getDolGlobalString('PROJECT_ADDON_PDF') == "$name") {
 									print img_picto($langs->trans("Default"), 'on');
 								} else {
 									print '<a class="reposition" href="'.$_SERVER["PHP_SELF"].'?action=setdoc&token='.newToken().'&value='.urlencode($name).'&scan_dir='.urlencode($module->scandir).'&label='.urlencode($module->name).'" alt="'.$langs->trans("Default").'">'.img_picto($langs->trans("Disabled"), 'off').'</a>';
diff --git a/htdocs/projet/card.php b/htdocs/projet/card.php
index de5f62dd8f9..4d91ed92903 100644
--- a/htdocs/projet/card.php
+++ b/htdocs/projet/card.php
@@ -617,7 +617,7 @@ if ($action == 'create' && $user->hasRight('projet', 'creer')) {
 	print '<table class="border centpercent tableforfieldcreate">';
 
 	$defaultref = '';
-	$modele = !getDolGlobalString('PROJECT_ADDON') ? 'mod_project_simple' : $conf->global->PROJECT_ADDON;
+	$modele = getDolGlobalString('PROJECT_ADDON', 'mod_project_simple');
 
 	// Search template files
 	$file = '';
diff --git a/htdocs/projet/class/api_projects.class.php b/htdocs/projet/class/api_projects.class.php
index cc71d6f1bf8..8cd7699aa3f 100644
--- a/htdocs/projet/class/api_projects.class.php
+++ b/htdocs/projet/class/api_projects.class.php
@@ -315,7 +315,7 @@ class Projects extends DolibarrApi
 			$file = '';
 			$classname = '';
 			$filefound = 0;
-			$modele = !getDolGlobalString('PROJECT_ADDON') ? 'mod_project_simple' : $conf->global->PROJECT_ADDON;
+			$modele = getDolGlobalString('PROJECT_ADDON', 'mod_project_simple');
 
 			$dirmodels = array_merge(array('/'), (array) $conf->modules_parts['models']);
 			foreach ($dirmodels as $reldir) {
diff --git a/htdocs/projet/class/project.class.php b/htdocs/projet/class/project.class.php
index f33b4b08337..7101f5fc736 100644
--- a/htdocs/projet/class/project.class.php
+++ b/htdocs/projet/class/project.class.php
@@ -1781,7 +1781,7 @@ class Project extends CommonObject
 
 		//Generate next ref
 		$defaultref = '';
-		$obj = !getDolGlobalString('PROJECT_ADDON') ? 'mod_project_simple' : $conf->global->PROJECT_ADDON;
+		$obj = getDolGlobalString('PROJECT_ADDON', 'mod_project_simple');
 		// Search template files
 		$file = '';
 		$classname = '';
diff --git a/htdocs/public/project/new.php b/htdocs/public/project/new.php
index 1c0380b475c..1fc8b87725c 100644
--- a/htdocs/public/project/new.php
+++ b/htdocs/public/project/new.php
@@ -258,7 +258,7 @@ if (empty($reshook) && $action == 'add') {
 	if (!$error) {
 		// Defined the ref into $defaultref
 		$defaultref = '';
-		$modele = !getDolGlobalString('PROJECT_ADDON') ? 'mod_project_simple' : $conf->global->PROJECT_ADDON;
+		$modele = getDolGlobalString('PROJECT_ADDON', 'mod_project_simple');
 
 		// Search template files
 		$file = '';