diff --git a/.travis/build.sh b/.travis/build.sh
index 712f5371..82dbbb2f 100755
--- a/.travis/build.sh
+++ b/.travis/build.sh
@@ -11,7 +11,7 @@ if [ "$TRAVIS_OS_NAME" = "linux" -o -z "$TRAVIS_OS_NAME" ]; then
     export PKG_CONFIG_PATH=$HOME/.local/lib/pkgconfig:$PKG_CONFIG_PATH
 
     mkdir build && cd build
-    cmake .. -DDYNARMIC_USE_SYSTEM_BOOST=0 -DBoost_INCLUDE_DIRS=${PWD}/../externals/ext-boost
+    cmake .. -DDYNARMIC_USE_SYSTEM_BOOST=0 -DBoost_INCLUDE_DIRS=${PWD}/../externals/ext-boost -DCMAKE_BUILD_TYPE=Release
     make -j4
 
     ctest -VV -C Release