diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1e167a07..1ffa703e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -50,6 +50,7 @@ endif ()
 find_package(Boost)
 if (Boost_FOUND)
   add_definitions(-DHAVE_BOOST)
+  include_directories(${Boost_INCLUDE_DIRS})
 endif ()
 if (EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/format-benchmark/tinyformat_test.cpp)
   add_subdirectory(format-benchmark)