diff --git a/README.md b/README.md
index c034a38..8ea0d50 100644
--- a/README.md
+++ b/README.md
@@ -80,7 +80,7 @@ If those don't work for you, you can build from source.
 
 ### Packages
 
-We create packages for releases for a few distributions. Please note that these packages depend on libmosquitto1 from the [Mosquitto project](http://mosquitto.org/downloads).
+We create packages for releases for a few distributions. Please note that these packages might depend on libmosquitto1 from the [Mosquitto project](http://mosquitto.org/downloads). In particular, for Debian Stretch (9) this is not the case.
 
 Binaries (`ocat`, `ot-recorder`) from these packages run setuid to user `owntracks` so that they work for all users of the system. Note that, say, certificate files you provide must therefore also be readable by the user `owntracks`.