diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 0799569c..aa1af922 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -175,6 +175,8 @@ target_compile_definitions(ss-local PUBLIC -DMODULE_LOCAL)
 target_compile_definitions(ss-redir PUBLIC -DMODULE_REDIR)
 target_compile_definitions(shadowsocks-libev PUBLIC -DMODULE_LOCAL -DLIB_ONLY)
 
+target_include_directories(shadowsocks-libev PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
+
 target_link_libraries(ss-server cork ipset ${DEPS})
 target_link_libraries(ss-tunnel cork ${DEPS})
 target_link_libraries(ss-manager m bloom cork ${LIBEV} ${LIBUDNS})
@@ -206,6 +208,8 @@ target_compile_definitions(ss-local-shared PUBLIC -DMODULE_LOCAL)
 target_compile_definitions(ss-redir-shared PUBLIC -DMODULE_REDIR)
 target_compile_definitions(shadowsocks-libev-shared PUBLIC -DMODULE_LOCAL)
 
+target_include_directories(shadowsocks-libev-shared PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
+
 target_link_libraries(ss-server-shared ${DEPS_SHARED})
 target_link_libraries(ss-tunnel-shared ${DEPS_SHARED})
 target_link_libraries(ss-manager-shared ${CMAKE_THREAD_LIBS_INIT} ${LIBEV_SHARED} ${LIBUDNS_SHARED} ${DEPS_SHARED})