diff --git a/htdocs/core/modules/modExpenseReport.class.php b/htdocs/core/modules/modExpenseReport.class.php
index 8690d7627f2..31a541189b5 100755
--- a/htdocs/core/modules/modExpenseReport.class.php
+++ b/htdocs/core/modules/modExpenseReport.class.php
@@ -84,7 +84,7 @@ class modExpenseReport extends DolibarrModules
 
 		// Dependencies
 		$this->depends = array();		// List of modules id that must be enabled if this module is enabled
-//		$this->conflictwith = array("modDeplacement");
+		$this->conflictwith = array("modDeplacement");
 		$this->requiredby = array();	// List of modules id to disable if this one is disabled
 		$this->phpmin = array(4,3);					// Minimum version of PHP required by module
 		$this->need_dolibarr_version = array(3,7);	// Minimum version of Dolibarr required by module