diff --git a/appveyor.yml b/appveyor.yml
index a1846c4a..5ce87140 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,6 +1,7 @@
 version: 1.0.{build}
 os: Visual Studio 2015 Preview
 init:
+- cmake -h
 - cmake -G "Visual Studio 14 2015 Win64"
 build:
   verbosity: minimal