prefer unset of ENV var over set to empty
@@ -23,7 +23,7 @@ HAB=${HAB_TEST_CMD:-hab}
CACHE_DIR="test-cache"
IDENT_FILE="ident_file"
# we explicitly define --channel where needed in the tests
-export HAB_BLDR_CHANNEL=
+unset HAB_BLDR_CHANNEL
echo
echo "--- Testing with command ${HAB}, using cache dir ${CACHE_DIR}"
