diff --git a/README.md b/README.md
index 16402dd..14cb820 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ This exporter exports some variables from an
 [AVM Fritzbox](http://avm.de/produkte/fritzbox/)
 to prometheus.
 
-This exporter is tested with a Fritzbox 7490 and software version 06.51.
+This exporter is tested with a Fritzbox 7490 and 7390 with software version 06.51.
 
 ## Building