diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/common/concurrentdetection/ConcurrentModificationController.java b/libreplan-webapp/src/main/java/org/libreplan/web/common/concurrentdetection/ConcurrentModificationController.java
index 1192995c2..b46a5c0a6 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/web/common/concurrentdetection/ConcurrentModificationController.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/common/concurrentdetection/ConcurrentModificationController.java
@@ -25,6 +25,7 @@ import javax.servlet.http.HttpServletRequest;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
+import org.libreplan.web.common.ConfirmCloseUtil;
 import org.springframework.dao.OptimisticLockingFailureException;
 import org.zkoss.zk.ui.Component;
 import org.zkoss.zk.ui.Executions;
@@ -49,6 +50,7 @@ public class ConcurrentModificationController extends GenericForwardComposer {
                         "an OptimistLockingFailureException caused a disruption to an user",
                         exception);
         if (Executions.getCurrent() != null) {
+            ConfirmCloseUtil.resetConfirmClose();
             Executions.sendRedirect("/common/concurrent_modification.zul?back="
                     + backURL);
         } else {