1 files changed, 3 insertions, 1 deletions
diff --git a/gr-zeromq/lib/sub_msg_source_impl.cc b/gr-zeromq/lib/sub_msg_source_impl.cc
index b016405d40..0a11ea77f0 100644
--- a/gr-zeromq/lib/sub_msg_source_impl.cc
+++ b/gr-zeromq/lib/sub_msg_source_impl.cc
@@ -25,6 +25,8 @@
 #endif
 
 #include <gnuradio/io_signature.h>
+#include <boost/thread/thread.hpp>
+#include <boost/date_time/posix_time/posix_time.hpp>
 #include "sub_msg_source_impl.h"
 #include "tag_headers.h"
 
@@ -101,7 +103,7 @@ namespace gr {
 
           message_port_pub(pmt::mp("out"), m);
         } else {
-          usleep(100);
+          boost::this_thread::sleep(boost::posix_time::microseconds(100));
         }
       }
     }