diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index e40875c..147671b 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -37,6 +37,7 @@ set (LIBRARY_INCLUDE_PATH  "${LIBRARY_MODULE_PATH}/include")
 #set includes
 include_directories (${LIBRARY_INCLUDE_PATH} ${THIRD_PARTY_INCLUDE_PATH})
 include_directories (${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR})
+include_directories (${GRAPHVIZ_INCLUDE_DIRS})
 
 #set sources
 file (GLOB_RECURSE LIB_HEADER_FILES "${LIBRARY_INCLUDE_PATH}/*.hpp" ${LIBRARY_INCLUDE_PATH}/*.h ${LIBRARY_INCLUDE_PATH}/*.hh)