diff --git a/include/boost/smart_ptr/detail/spinlock_gcc_arm.hpp b/include/boost/smart_ptr/detail/spinlock_gcc_arm.hpp
index 016796a..24d08a8 100644
--- a/include/boost/smart_ptr/detail/spinlock_gcc_arm.hpp
+++ b/include/boost/smart_ptr/detail/spinlock_gcc_arm.hpp
@@ -82,6 +82,7 @@ public:
     {
         __asm__ __volatile__( BOOST_SP_ARM_BARRIER ::: "memory" );
         *const_cast< int volatile* >( &v_ ) = 0;
+        __asm__ __volatile__( BOOST_SP_ARM_BARRIER ::: "memory" );
     }
 
 public: