diff --git a/client/flasher.c b/client/flasher.c
index 9b92ffa43..d494810aa 100644
--- a/client/flasher.c
+++ b/client/flasher.c
@@ -67,8 +67,8 @@ void CloseProxmark() {
 int OpenProxmark(size_t i) {
   sp = uart_open(serial_port_name);
   if (sp == INVALID_SERIAL_PORT) {
-		//poll once a second
-		sleep(1);
+    //poll once a second
+    msleep(100);
     return 0;
   }
   return 1;