diff --git a/.travis.yml b/.travis.yml
index ced831b..3afe36c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -324,7 +324,7 @@ matrix:
       env: CMAKE=1
       script:
         - mkdir __build__ && cd __build__
-        - cmake -DBOOST_ENABLE_CMAKE=1 -DBoost_VERBOSE=1 -DBOOST_INCLUDE_LIBRARIES=assert ..
+        - cmake -DBOOST_ENABLE_CMAKE=1 -DBUILD_TESTING=ON -DBoost_VERBOSE=1 -DBOOST_INCLUDE_LIBRARIES=assert ..
         - ctest --output-on-failure -R boost_assert
 
     - os: linux
diff --git a/appveyor.yml b/appveyor.yml
index 7203084..9793876 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -61,7 +61,7 @@ test_script:
   - if "%CMAKE%%CMAKE_SUBDIR%%CMAKE_INSTALL%" == ""  b2 -j 3 libs/assert/test toolset=%TOOLSET% %CXXSTD% %ADDRMD%
 
   - if not "%CMAKE%" == ""  mkdir __build__ && cd __build__
-  - if not "%CMAKE%" == ""  cmake -DBOOST_ENABLE_CMAKE=1 -DBoost_VERBOSE=1 -DBOOST_INCLUDE_LIBRARIES=assert ..
+  - if not "%CMAKE%" == ""  cmake -DBOOST_ENABLE_CMAKE=1 -DBUILD_TESTING=ON -DBoost_VERBOSE=1 -DBOOST_INCLUDE_LIBRARIES=assert ..
   - if not "%CMAKE%" == ""  ctest --output-on-failure -R boost_assert -C Debug
   - if not "%CMAKE%" == ""  ctest --output-on-failure -R boost_assert -C Release
   - if not "%CMAKE%" == ""  ctest --output-on-failure -R boost_assert -C MinSizeRel