diff --git a/client/proxmark3.c b/client/proxmark3.c
index 102e03f72..91bc7b314 100644
--- a/client/proxmark3.c
+++ b/client/proxmark3.c
@@ -41,6 +41,12 @@ void SendCommand(UsbCommand *c) {
     ERR("Sending command failed, previous command is still pending");
   }
 */
+  if(offline)
+    {
+      PrintAndLog("Sending bytes to proxmark failed - offline");
+      return;
+    }
+
   while(txcmd_pending);
   txcmd = *c;
   txcmd_pending = true;