diff --git a/appveyor.yml b/appveyor.yml
index b887e78b2..cbb8df2a6 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -3,7 +3,7 @@ branches:
   only:
   - master
   - RC_1_1
-os: Visual Studio 2015
+os: Previous Visual Studio 2015
 clone_depth: 1
 environment:
   matrix: