diff --git a/check b/check
index 96198ac..f6fb352 100755
--- a/check
+++ b/check
@@ -489,10 +489,14 @@
 	if [ -f ${RESULT_DIR}/require_test ]; then
 		_check_test_fs || err=true
 		rm -f ${RESULT_DIR}/require_test*
+	else
+		_test_unmount 2> /dev/null
 	fi
 	if [ -f ${RESULT_DIR}/require_scratch ]; then
 		_check_scratch_fs || err=true
 		rm -f ${RESULT_DIR}/require_scratch*
+	else
+		_scratch_unmount 2> /dev/null
 	fi
 }