diff --git a/install_mysql.sh b/install_mysql.sh
index 645e336..40a510d 100755
--- a/install_mysql.sh
+++ b/install_mysql.sh
@@ -6107,6 +6107,26 @@ if $UPDATE_MYSQL ; then
 
    if [[ ! -f "${MYSQL_INSTALL_DIR}/sys-maint.cnf" ]] ; then
       _sys_maint_cnf_needed=true
+   else
+
+      echononl "Ersetze 'socket' variable in '${MYSQL_INSTALL_DIR}/sys-maint.cnf'.." 
+      if $(grep -q -E "^\s*socket\s*=\s*${MYSQL_UNIX_SOCKET}" "${MYSQL_INSTALL_DIR}/sys-maint.cnf" 2> /dev/null) ; then
+         echo_skipped
+      else
+         echo "" >> ${logdir}/main.log
+         echo "## - Ersetze 'socket' variable in '${MYSQL_INSTALL_DIR}/sys-maint.cnf'.." >> ${logdir}/main.log
+         echo "## -" >> ${logdir}/main.log
+         echo "perl -i -n -p -e \"s#^(\s*socket\s*=).*#\1 ${MYSQL_UNIX_SOCKET}#\" \"${MYSQL_INSTALL_DIR}/sys-maint.cnf\"" >> ${logdir}/main.log
+
+         perl -i -n -p -e "s#^(\s*socket\s*=).*#\1 ${MYSQL_UNIX_SOCKET}#" "${MYSQL_INSTALL_DIR}/sys-maint.cnf" >> ${logdir}/main.log 2>&1
+         if [ "$?" = "0" ]; then
+            echo_ok
+         else
+            echo_failed
+            warn "Ersetzen von 'socket' variable in '${MYSQL_INSTALL_DIR}/sys-maint.cnf' fehlgeschlagen."
+         fi
+
+      fi
    fi
 fi