1 files changed, 4 insertions, 4 deletions

diff --git a/firmware/usbstack/usb_serial.c b/firmware/usbstack/usb_serial.c
index a08394c0a8..c96936f1d4 100644
--- a/firmware/usbstack/usb_serial.c
+++ b/firmware/usbstack/usb_serial.c
@@ -294,7 +294,7 @@ bool usb_serial_control_request(struct usb_ctrlrequest* req, unsigned char* dest
             if (req->wLength == sizeof(line_coding))
             {
                 /* Receive line coding into local copy */
-                usb_drv_recv(EP_CONTROL, &line_coding, sizeof(line_coding));
+                usb_drv_recv_nonblocking(EP_CONTROL, &line_coding, sizeof(line_coding));
                 usb_drv_send(EP_CONTROL, NULL, 0); /* ack */
                 handled = true;
             }
@@ -316,7 +316,7 @@ bool usb_serial_control_request(struct usb_ctrlrequest* req, unsigned char* dest
             if (req->wLength == sizeof(line_coding))
             {
                 /* Send back line coding so host is happy */
-                usb_drv_recv(EP_CONTROL, NULL, 0); /* ack */
+                usb_drv_recv_nonblocking(EP_CONTROL, NULL, 0); /* ack */
                 usb_drv_send(EP_CONTROL, &line_coding, sizeof(line_coding));
                 handled = true;
             }
@@ -329,7 +329,7 @@ bool usb_serial_control_request(struct usb_ctrlrequest* req, unsigned char* dest
 void usb_serial_init_connection(void)
 {
     /* prime rx endpoint */
-    usb_drv_recv(ep_out, receive_buffer, sizeof receive_buffer);
+    usb_drv_recv_nonblocking(ep_out, receive_buffer, sizeof receive_buffer);
 
     /* we come here too after a bus reset, so reset some data */
     buffer_transitlength = 0;
@@ -420,7 +420,7 @@ void usb_serial_transfer_complete(int ep,int dir, int status, int length)
             /* Data received. TODO : Do something with it ? */
 
             /* Get the next bit */
-            usb_drv_recv(ep_out, receive_buffer, sizeof receive_buffer);
+            usb_drv_recv_nonblocking(ep_out, receive_buffer, sizeof receive_buffer);
             break;
 
         case USB_DIR_IN: