diff --git a/include/boost/fiber/context.hpp b/include/boost/fiber/context.hpp
index 99807a56..870f600f 100644
--- a/include/boost/fiber/context.hpp
+++ b/include/boost/fiber/context.hpp
@@ -260,16 +260,16 @@ public:
     context( worker_context_t,
              boost::context::preallocated palloc, StackAlloc salloc,
              Fn && fn, Args && ... args) :
-        use_count_( 1), // fiber instance or scheduler owner
-        flags_( flag_worker_context),
-        ctx_( std::allocator_arg, palloc, salloc,
+        use_count_{ 1 }, // fiber instance or scheduler owner
+        flags_{ flag_worker_context },
+        ctx_{ std::allocator_arg, palloc, salloc,
               // mutable: generated operator() is not const -> enables std::move( fn)
               // std::make_tuple: stores decayed copies of its args, implicitly unwraps std::reference_wrapper
               [this,fn_=std::forward< Fn >( fn),tpl_=std::make_tuple( std::forward< Args >( args) ...),
                ctx=boost::context::execution_context::current()] (void *) mutable noexcept {
                 try {
-                    auto fn( std::move( fn_) );
-                    auto tpl( std::move( tpl_) );
+                    auto fn = std::move( fn_);
+                    auto tpl = std::move( tpl_);
                     // jump back after initialization
                     void * vp = ctx();
                     // execute returned functor
@@ -283,7 +283,7 @@ public:
                 // terminate context
                 terminate();
                 BOOST_ASSERT_MSG( false, "fiber already terminated");
-              }) {
+              }} {
         // switch for initialization
         ctx_();
     }
diff --git a/src/context.cpp b/src/context.cpp
index 1b37274b..c45b41b8 100644
--- a/src/context.cpp
+++ b/src/context.cpp
@@ -148,16 +148,16 @@ context::reset_active() noexcept {
 
 // main fiber context
 context::context( main_context_t) noexcept :
-    use_count_( 1), // allocated on main- or thread-stack
-    flags_( flag_main_context),
-    ctx_( boost::context::execution_context::current() ) {
+    use_count_{ 1 }, // allocated on main- or thread-stack
+    flags_{ flag_main_context },
+    ctx_{ boost::context::execution_context::current() } {
 }
 
 // dispatcher fiber context
 context::context( dispatcher_context_t, boost::context::preallocated const& palloc,
                   default_stack const& salloc, scheduler * sched) :
-    flags_( flag_dispatcher_context),
-    ctx_( std::allocator_arg, palloc, salloc,
+    flags_{ flag_dispatcher_context },
+    ctx_{ std::allocator_arg, palloc, salloc,
           [this,sched] (void * vp) noexcept {
             if ( nullptr != vp) {
                 std::function< void() > * func( static_cast< std::function< void() > * >( vp) );
@@ -167,7 +167,7 @@ context::context( dispatcher_context_t, boost::context::preallocated const& pall
             sched->dispatch();
             // dispatcher context should never return from scheduler::dispatch()
             BOOST_ASSERT_MSG( false, "disatcher fiber already terminated");
-          }) {
+          }} {
 }
 
 context::~context() noexcept {