diff --git a/scripts/Build-Target b/scripts/Build-Target
index 62a9433a6..f2439de01 100755
--- a/scripts/Build-Target
+++ b/scripts/Build-Target
@@ -90,13 +90,13 @@ fi
 # so we can disable stuff not available in Build-Target
 export ROCK_BUILD_TARGET=1
 
-build_root="$base/build/$ROCKCFG_ID"
+export build_root="$base/build/$ROCKCFG_ID"
 # Set permissions and ownership of $build_root; $base/build might have different ones.
 mkdir -p "${build_root}" ; chmod 700 "${build_root}" ; chown 0:0 "${build_root}"
 
-build_rock="$base/build/$ROCKCFG_ID/ROCK"
-build_logs="$build_rock/logs" ; mkdir -p "${build_logs}"
-build_pkgs="$build_rock/pkgs" ; mkdir -p "${build_pkgs}"
+export build_rock="$base/build/$ROCKCFG_ID/ROCK"
+export build_logs="$build_rock/logs" ; mkdir -p "${build_logs}"
+export build_pkgs="$build_rock/pkgs" ; mkdir -p "${build_pkgs}"
 
 if [ "$ROCKCFG_PARANOIA_CHECK" = 1 ] ; then
 	./scripts/Check-System -paranoia || exit 1