diff --git a/src/thread/thread.cpp b/src/thread/thread.cpp
index 4de4344..0a929eb 100644
--- a/src/thread/thread.cpp
+++ b/src/thread/thread.cpp
@@ -178,7 +178,7 @@ namespace fc {
    void thread::sleep_until( const time_point& tp ) {
       //ilog( "sleep until ${tp}    wait: ${delta}", ("tp",tp)("delta",(tp-fc::time_point::now()).count()) );
      
-      if( tp <= (time_point::now()+fc::microseconds(500)) ) 
+      if( tp <= (time_point::now()+fc::microseconds(10000)) ) 
       {
          this->yield(true);
       }
diff --git a/src/thread/thread_d.hpp b/src/thread/thread_d.hpp
index b482b2e..8f5237f 100644
--- a/src/thread/thread_d.hpp
+++ b/src/thread/thread_d.hpp
@@ -447,7 +447,7 @@ namespace fc {
         void yield_until( const time_point& tp, bool reschedule ) {
           check_fiber_exceptions();
 
-          if( tp <= (time_point::now()+fc::microseconds(500)) ) 
+          if( tp <= (time_point::now()+fc::microseconds(10000)) ) 
           {
             return;
           }