diff --git a/.appveyor.yml b/.appveyor.yml
index f6d05e9..461f775 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -8,10 +8,6 @@ platform:
   - Win32
   - x64
 
-configuration:
-  - Debug
-  - Release
-
 build:
   parallel: true
 
@@ -19,10 +15,12 @@ before_build:
   - if exist build RMDIR /S /Q build
   - if not exist build mkdir build
   - cd build
-  - cmake -A %PLATFORM% ..
 
 build_script:
-  - cmake --build . --config %CONFIGURATION%
+  - cmake -A %PLATFORM% ..
+  - cmake --build . --config Debug
+  - cmake --build . --config Release
 
 test_script:
-  - ctest --output-on-failure -C %CONFIGURATION%
+  - ctest --output-on-failure -C Debug
+  - ctest --output-on-failure -C Release
diff --git a/.travis.yml b/.travis.yml
index 50e2bba..e200666 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -104,11 +104,11 @@ before_script:
   - cd build
 
 script:
-  - cmake -G "Unix Makefiles" ..
+  - cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Debug ..
   - cmake --build . --config Debug -- -j${JOBS}
   - ctest --output-on-failure -C Debug -j${JOBS}
   - rm -rf ./*
-  - cmake -G "Unix Makefiles" ..
+  - cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release ..
   - cmake --build . --config Release -- -j${JOBS}
   - ctest --output-on-failure -C Release -j${JOBS}