diff --git a/include/boost/interprocess/detail/workaround.hpp b/include/boost/interprocess/detail/workaround.hpp
index f3ce418..4ed7120 100644
--- a/include/boost/interprocess/detail/workaround.hpp
+++ b/include/boost/interprocess/detail/workaround.hpp
@@ -41,7 +41,7 @@
    //////////////////////////////////////////////////////
    //Check for XSI shared memory objects. They are available in nearly all UNIX platforms
    //////////////////////////////////////////////////////
-   #if !defined(__QNXNTO__) && !defined(__ANDROID__) && !defined(__HAIKU__) && !(__VXWORKS__) && !(__EMSCRIPTEN__)
+   #if !defined(__QNXNTO__) && !defined(__ANDROID__) && !defined(__HAIKU__) && !defined(__VXWORKS__) && !defined(__EMSCRIPTEN__)
       #define BOOST_INTERPROCESS_XSI_SHARED_MEMORY_OBJECTS
    #endif