diff --git a/src/net.c b/src/net.c
index d485dc33..3fccad12 100644
--- a/src/net.c
+++ b/src/net.c
@@ -2019,6 +2019,7 @@ static void coap_retransmittimer_execute(void *arg) {
       break;
     } else {
       elapsed -= nextinqueue->t;
+      nextinqueue->t = 0;
       coap_retransmit(ctx, coap_pop_next(ctx));
       nextinqueue = coap_peek_next(ctx);
     }