diff --git a/src/avrdude/main.c b/src/avrdude/main.c
index 60be7ec3a9..28222764f0 100644
--- a/src/avrdude/main.c
+++ b/src/avrdude/main.c
@@ -1523,6 +1523,10 @@ main_exit:
    */
 
   if (is_open) {
+#if defined(__APPLE__)
+    //FIXME hack to make PrusaLink aware MK3 firmware to work on OSX.
+    sleep(1);
+#endif // __APPLE__
     pgm->powerdown(pgm);
 
     pgm->disable(pgm);