diff --git a/appveyor.yml b/appveyor.yml
index 3b435c7d..31a9b0c0 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -60,10 +60,12 @@ before_build:
 - cmake .. -G "%CMAKE_GENERATOR%" -DLUA_VERSION="%LUA_VERSION%" -DBUILD_LUA=ON -DBUILD_LUA_AS_DLL=OFF -DTESTS=ON -DEXAMPLES=ON -DSINGLE=ON -DTESTS_EXAMPLES=ON -DTESTS_SINGLE=ON
 
 build_script:
-- cmake --build .
+- cmake --build --config Debug .
+- cmake --build --config Release .
 
 test_script:
-- ctest
+- ctest -C Debug --output-on-failure
+- ctest -C Release --output-on-failure
 
 notifications:
 - provider: Webhook