diff --git a/appveyor.yml b/appveyor.yml
index cf294ba0b8..1f5391edf2 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,5 +1,5 @@
 environment:
-  CMAKE_ARGS: ""
+  CMAKE_ARGS: -DCMAKE_BUILD_TYPE=Release
   NSIS_ROOT: C:\nsis
 
 configuration: