diff --git a/CMakeLists.txt b/CMakeLists.txt
index 49aa417..ceb472e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -31,6 +31,9 @@ ENDIF()
 FIND_PATH(ubus_include_dir libubus.h)
 INCLUDE_DIRECTORIES(${ubus_include_dir})
 
+FIND_PATH(ubox_include_dir libubox/blobmsg_json.h)
+INCLUDE_DIRECTORIES(${ubox_include_dir})
+
 ADD_EXECUTABLE(rpcd main.c exec.c session.c uci.c plugin.c)
 TARGET_LINK_LIBRARIES(rpcd ubox ubus uci dl blobmsg_json ${json} ${crypt})