diff --git a/typo3/sysext/core/Classes/Authentication/AbstractUserAuthentication.php b/typo3/sysext/core/Classes/Authentication/AbstractUserAuthentication.php
index 544323182614b34604d41d482667d92fe4b350c4..67f8d58d22c16e540029e2a8805dbd92f8f66174 100644
--- a/typo3/sysext/core/Classes/Authentication/AbstractUserAuthentication.php
+++ b/typo3/sysext/core/Classes/Authentication/AbstractUserAuthentication.php
@@ -706,7 +706,6 @@ abstract class AbstractUserAuthentication {
 				}
 				// Delete old user session if any
 				$this->logoff();
-				$this->newSessionID = TRUE;
 			}
 			// Refuse login for _CLI users, if not processing a CLI request type
 			// (although we shouldn't be here in case of a CLI request type)