diff --git a/appveyor.yml b/appveyor.yml
index aef2d6f730..7e9155e6db 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,6 +1,3 @@
-# it seems that Qt is only installed by default on unstable os at the moment
-os: unstable
-
 # shallow clone
 clone_depth: 5