diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 5b0c5b7..659d4cc 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -61,7 +61,7 @@ SET(CosmoTool_SRCS ${CosmoTool_SRCS}
 	growthFactor.hpp
 )
 
-include_directories(${GSL_INCLUDE_PATH} ${CMAKE_BINARY_DIR}/src)
+include_directories(${Boost_INCLUDE_DIRS} ${GSL_INCLUDE_PATH} ${CMAKE_BINARY_DIR}/src)
 
 set(CosmoTool_LIBS ${GSL_LIBRARIES})
 if(YORICK_SUPPORT)