Wrong highlighting gmp's functions

I have installed gmp on my linux from repo: sudo apt install libgmp-dev

and Clion doesn't highlight syntax correctly. For example after this code:
mpq_class x;
x.canonicalize();
it says: Class '__gmp_expr' doesn't have a function 'canonicalize'

Did I something wrong or it is a bug?

Clion works good with NTL though.

My CMakeLists.txt:

    cmake_minimum_required(VERSION 3.6)

    project(eulerseries)

    set(CMAKE_CXX_STANDARD 11)
    set(CMAKE_CXX_STANDARD_REQUIRED ON)

    find_library(GMP_LIBRARY gmp)
    find_library(GMPXX_LIBRARY gmpxx)

    set(SOURCE_FILES main.cpp)
    add_executable(eulerseries ${SOURCE_FILES})

    target_link_libraries(eulerseries "${GMP_LIBRARY}" "${GMPXX_LIBRARY}")