diff --git a/build.sh b/build.sh
index 8e47c37..afc77f3 100644
--- a/build.sh
+++ b/build.sh
@@ -235,6 +235,7 @@ cat > "${CDIR}/start.sh" <<SHEOF
 #!/usr/bin/env bash
 set -e
 cd "${CDIR}"
+export PYTHONPATH="${PKGDIR}/ahserver:${PKGDIR}/apppublic:${PKGDIR}/sqlor:${PKGDIR}/appbase:${PKGDIR}/rbac:\$PYTHONPATH"
 exec "${VENV}/bin/python" "${CDIR}/app/pccs.py"
 SHEOF
 chmod +x "${CDIR}/start.sh"