diff --git a/data/fwupd.conf b/data/fwupd.conf
index a10a3d1a8..3a8f43557 100644
--- a/data/fwupd.conf
+++ b/data/fwupd.conf
@@ -1,6 +1,9 @@
 [fwupd]
 
 # The download URI to use for LVFS metadata
+#
+# If you want to use testing firmware then change this value to:
+#    https://secure-lvfs.rhcloud.com/downloads/firmware-testing.xml.gz
 DownloadURI=https://secure-lvfs.rhcloud.com/downloads/firmware.xml.gz
 
 # If we should verify option ROM images