diff --git a/demos/ARM7-AT91SAM7X-UIP-GCC/web/webthread.c b/demos/ARM7-AT91SAM7X-UIP-GCC/web/webthread.c
index bbf08b820..4d0516c2c 100644
--- a/demos/ARM7-AT91SAM7X-UIP-GCC/web/webthread.c
+++ b/demos/ARM7-AT91SAM7X-UIP-GCC/web/webthread.c
@@ -152,7 +152,7 @@ msg_t WebThread(void *p) {
    * Event sources setup.
    */
   chEvtRegister(macGetReceiveEventSource(&ETH1), &el0, FRAME_RECEIVED_ID);
-  chEvtPend(EVENT_MASK(FRAME_RECEIVED_ID)); /* In case some frames are already buffered */
+  chEvtAddFlags(EVENT_MASK(FRAME_RECEIVED_ID)); /* In case some frames are already buffered */
 
   evtInit(&evt1, MS2ST(500));
   evtStart(&evt1);