diff --git a/.travis.yml b/.travis.yml
index 7b71b9ec..6a47d771 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -65,7 +65,7 @@ before_script :
   - cd demo-build
 
 script:
-  - cmake -G"Unix Makefiles" ../nana-demo -DCMAKE_INSTALL_PREFIX=.. -DNANA_CMAKE_ENABLE_JPEG=ON -DNANA_CMAKE_FIND_BOOST_FILESYSTEM=ON -DNANA_CMAKE_AUTOMATIC_GUI_TESTING=ON
+  - cmake -G"Unix Makefiles" ../nana-demo -DCMAKE_INSTALL_PREFIX=.. -DNANA_CMAKE_ENABLE_JPEG=ON -DNANA_CMAKE_FIND_BOOST_FILESYSTEM=OFF -DNANA_CMAKE_AUTOMATIC_GUI_TESTING=ON
   - make install
   # todo: separate resources from sources (a directory for images)
   - ls
diff --git a/build/cmake/verbose.cmake b/build/cmake/verbose.cmake
index 6d95eb9e..a1f9be06 100644
--- a/build/cmake/verbose.cmake
+++ b/build/cmake/verbose.cmake
@@ -30,6 +30,8 @@ if (NANA_CMAKE_VERBOSE_PREPROCESSOR)
 
     cmake_print_variables(CMAKE_BUILD_TYPE)
     cmake_print_variables(CMAKE_CONFIGURATION_TYPES)
+    cmake_print_variables(CMAKE_CXX_FLAGS_RELEASE)
+
     message ( "CMAKE_CXX_COMPILER_ID     = "  ${CMAKE_CXX_COMPILER_ID})
     message ( "COMPILER_IS_CLANG         = "  ${COMPILER_IS_CLANG})
     message ( "CMAKE_COMPILER_IS_GNUCXX  = "  ${CMAKE_COMPILER_IS_GNUCXX})