diff --git a/htdocs/core/modules/modProjet.class.php b/htdocs/core/modules/modProjet.class.php
index 25448f239e6..c006a10aa81 100644
--- a/htdocs/core/modules/modProjet.class.php
+++ b/htdocs/core/modules/modProjet.class.php
@@ -66,7 +66,7 @@ class modProjet extends DolibarrModules
 		// Dependencies
 		$this->hidden = false; // A condition to hide module
 		$this->depends = array(); // List of module class names as string that must be enabled if this module is enabled
-		$this->requiredby = array(); // List of module ids to disable if this one is disabled
+		$this->requiredby = array('modEventOrganization'); // List of module ids to disable if this one is disabled
 		$this->conflictwith = array(); // List of module class names as string this module is in conflict with
 		$this->phpmin = array(5, 6); // Minimum version of PHP required by module
 		$this->langfiles = array('projects');