diff --git a/distro/scripts/adl_cots.sh b/distro/scripts/adl_cots.sh
index f6d4135b64d1aa91927d0efcb7ff8f1523778837..d39d3c1c40d21577b4c71225b79430fb28ceb57f 100755
--- a/distro/scripts/adl_cots.sh
+++ b/distro/scripts/adl_cots.sh
@@ -467,7 +467,7 @@ mk_hl_region()
 {
     echo ${FUNCNAME[0]}
     rm -fr ${BUILD}/hdf5_HL* && \
-    tar_name=hdf5_HL_REGION-1.1.5.tar  && \
+    tar_name=hdf5_HL_REGION-1.1.5.tar.gz  && \
     install_the_source $tar_name   && \
     export HDF5_INSTALL_DIR=${USER_COTS_PATH} && \
     export CPPFLAGS="-I${USER_COTS_PATH}/include"  && \