diff --git a/.appveyor.yml b/.appveyor.yml
index f523e450..8a18818f 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -67,6 +67,6 @@ build_script:
   - cmake --build . --config %CONFIGURATION% -- /m /v:minimal
 
 test_script:
-  - ctest -j4
+  - ctest -j4 -C %CONFIGURATION%
 
 deploy: off