diff --git a/htdocs/core/modules/holiday/modules_holiday.php b/htdocs/core/modules/holiday/modules_holiday.php
index 25cd09de38a..8076451b883 100644
--- a/htdocs/core/modules/holiday/modules_holiday.php
+++ b/htdocs/core/modules/holiday/modules_holiday.php
@@ -146,9 +146,9 @@ class ModelNumRefHolidays
 		$langs->load("admin");
 
 		if ($this->version == 'development') return $langs->trans("VersionDevelopment");
-		if ($this->version == 'experimental') return $langs->trans("VersionExperimental");
-		if ($this->version == 'dolibarr') return DOL_VERSION;
-		if ($this->version) return $this->version;
+		elseif ($this->version == 'experimental') return $langs->trans("VersionExperimental");
+		elseif ($this->version == 'dolibarr') return DOL_VERSION;
+		elseif ($this->version) return $this->version;
 		return $langs->trans("NotAvailable");
 	}
 }