diff --git a/tools/linux_packaging/stage2.run.in b/tools/linux_packaging/stage2.run.in
index 6b02806a8a..0c07f73022 100755
--- a/tools/linux_packaging/stage2.run.in
+++ b/tools/linux_packaging/stage2.run.in
@@ -705,7 +705,7 @@ fi
 # Allow to remove non-free stuff for purists
 ############################################
 
-if test "${PGM_VENDOR}" = "Ardour"; then
+if test "${PGM_VENDOR}" = "Ardour" -a -d "${INSTALL_DEST_BASE}/${PGM_FULL_NAME}/LV2/Harrison.lv2"; then
 	ANSWER=$(VaildateYesNoEnterQuestion "Install Harrison XT plugins?" "y")
 
 	if test "n" = $ANSWER; then