diff --git a/src/3rdParty/salomesmesh/CMakeLists.txt b/src/3rdParty/salomesmesh/CMakeLists.txt
index 3424b78582..5bf7e0e0b9 100644
--- a/src/3rdParty/salomesmesh/CMakeLists.txt
+++ b/src/3rdParty/salomesmesh/CMakeLists.txt
@@ -46,6 +46,12 @@ elseif(CMAKE_COMPILER_IS_CLANGXX)
     if (_flag_found)
         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-missing-field-initializers")
     endif ()
+
+    unset(_flag_found CACHE)
+    check_cxx_compiler_flag("-Wno-c++17-extensions" _flag_found)
+    if (_flag_found)
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-c++17-extensions")
+    endif ()
 endif()