diff --git a/common/func_validate_configs.sh b/common/func_validate_configs.sh
index f93231d..81fd0e4 100644
--- a/common/func_validate_configs.sh
+++ b/common/func_validate_configs.sh
@@ -92,7 +92,7 @@ inline_doc
   local -r  clfs_PARAM_LIST="BOOK BUILDDIR SRC_ARCHIVE GETPKG RUNMAKE METHOD  ARCH  TARGET  TEST BOMB_TEST OPTIMIZE REPORT COMPARE RUN_ICA RUN_FARCE ITERATIONS STRIP FSTAB BOOT_CONFIG CONFIG GETKERNEL KEYMAP VIMLANG PAGE TIMEZONE LANG        LUSER LGROUP"
   local -r clfs2_PARAM_LIST="BOOK BUILDDIR SRC_ARCHIVE GETPKG RUNMAKE         ARCH  TARGET                 OPTIMIZE REPORT                                      STRIP FSTAB             CONFIG GETKERNEL KEYMAP VIMLANG PAGE TIMEZONE LANG        LUSER LGROUP"
   local -r   lfs_PARAM_LIST="BOOK BUILDDIR SRC_ARCHIVE GETPKG RUNMAKE                       TEST BOMB_TEST OPTIMIZE REPORT COMPARE RUN_ICA RUN_FARCE ITERATIONS STRIP FSTAB             CONFIG GETKERNEL        VIMLANG PAGE TIMEZONE LANG        LUSER LGROUP"
-  local -r  blfs_PARAM_LIST="BRANCH_ID BLFS_ROOT BLFS_XML"
+  local -r  blfs_PARAM_LIST="BRANCH_ID BLFS_ROOT BLFS_XML TRACKING_DIR"
 
   local -r ERROR_MSG_pt1='The variable \"${L_arrow}${config_param}${R_arrow}\" value ${L_arrow}${BOLD}${!config_param}${R_arrow} is invalid,'
   local -r ERROR_MSG_pt2=' check the config file ${BOLD}${GREEN}\<$(echo $PROGNAME | tr [a-z] [A-Z])/config\> or \<common/config\>${OFF}'
@@ -267,7 +267,8 @@ inline_doc
                ;;
 
       # BLFS params. No validation is required/allowed, IMHO
-      BRANCH_ID | BLFS_ROOT | BLFS_XML)  echo "`eval echo $PARAM_VALS`" ;;
+      BRANCH_ID | BLFS_ROOT | BLFS_XML )  echo "`eval echo $PARAM_VALS`" ;;
+      TRACKING_DIR ) validate_dir -z -d -w ;;
 
     esac
   done