diff --git a/MY_RUN/KTEST/007_16janvier/001_pgd1/run_prep_pgd_xyz b/MY_RUN/KTEST/007_16janvier/001_pgd1/run_prep_pgd_xyz
index e1e25bc5c1836d725d38f399e22fd7b57a10fe0d..02f4058d4ce2d341f571f583177a2c7517b52d47 100755
--- a/MY_RUN/KTEST/007_16janvier/001_pgd1/run_prep_pgd_xyz
+++ b/MY_RUN/KTEST/007_16janvier/001_pgd1/run_prep_pgd_xyz
@@ -5,7 +5,7 @@
 set -x
 set -e
 #
-PREP_PGD_FILES=$HOME/PREP_PGD_FILES_WWW
+PREP_PGD_FILES=${PREP_PGD_FILES:-"$HOME/PREP_PGD_FILES_WWW"}
 export PREP_PGD_FILES
 #
 if [ ! -d $PREP_PGD_FILES ]
diff --git a/MY_RUN/KTEST/007_16janvier/002_pgd2/run_prep_pgd_xyz b/MY_RUN/KTEST/007_16janvier/002_pgd2/run_prep_pgd_xyz
index f5e5c8218d2f03bd2bd5c77660c019f9bf5d85c9..2a94af8ceeca854fc19052b5a97f17dbca965d10 100755
--- a/MY_RUN/KTEST/007_16janvier/002_pgd2/run_prep_pgd_xyz
+++ b/MY_RUN/KTEST/007_16janvier/002_pgd2/run_prep_pgd_xyz
@@ -5,7 +5,7 @@
 #MNH_LIC for details. version 1.
 set -x
 set -e
-PREP_PGD_FILES=$HOME/PREP_PGD_FILES_WWW
+PREP_PGD_FILES=${PREP_PGD_FILES:-"$HOME/PREP_PGD_FILES_WWW"}
 export PREP_PGD_FILES
 ln -sf $PREP_PGD_FILES/CLAY_HWSD_MOY.??? .
 ln -sf $PREP_PGD_FILES/SAND_HWSD_MOY.??? .