diff --git a/.appveyor.yml b/.appveyor.yml
index e1f817d6..1f73b3e0 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -19,4 +19,4 @@ build_script:
 - cmake -E time cmake --build . 
 
 after_build:
-- ctest
+- ctest -C Release