diff --git a/.travis.yml b/.travis.yml
index b12e143..3349562 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -40,7 +40,7 @@ before_script:
   - cd $BUILD_HOME
   - cmake -DCMAKE_C_COMPILER=${CC}
           -DCMAKE_CXX_COMPILER=${CXX}
-          -DBUILD_TESTING=ON
+          -DBUILD_TESTS=ON
           -DBUILD_COVERAGE=ON ..
 
 script:
diff --git a/appveyor.yml b/appveyor.yml
index e234cd5..1d3f5ae 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -55,7 +55,7 @@ before_build:
   - mkdir %BUILD_HOME%
   - cd %BUILD_HOME%
   - cmake -G "%GENERATOR%"
-    -DBUILD_TESTING=ON
+    -DBUILD_TESTS=ON
     -DBOOST_ROOT="%BOOST_ROOT%" ..
 
 # run custom build script