diff --git a/os/hal/src/usb.c b/os/hal/src/usb.c
index 2bf845e6e..db4d826c1 100644
--- a/os/hal/src/usb.c
+++ b/os/hal/src/usb.c
@@ -619,6 +619,7 @@ void _usb_ep0setup(USBDriver *usbp, usbep_t ep) {
       usb_lld_stall_out(usbp, 0);
       _usb_isr_invoke_event_cb(usbp, USB_EVENT_STALLED);
       usbp->ep0state = USB_EP0_ERROR;
+      return;
     }
   }
 
diff --git a/readme.txt b/readme.txt
index cfccd8dd8..5f21cb314 100644
--- a/readme.txt
+++ b/readme.txt
@@ -82,6 +82,7 @@
 *****************************************************************************
 
 *** 2.5.0 ***
+- FIX: Fixed anomaly in USB enumeration (bug 3565325)(backported to 2.4.3).
 - FIX: Fixed problem with lwIP statistics (bug 3564134)(backported to 2.4.3).
 - FIX: Fixed packed structures macros not functional in IAR and RVCT port
   (bug 3561279)(backported to 2.4.3 and 2.2.10).