diff --git a/src/coap_io.c b/src/coap_io.c
index 27a12b9b..efd8f555 100644
--- a/src/coap_io.c
+++ b/src/coap_io.c
@@ -1102,7 +1102,6 @@ coap_write(coap_context_t *ctx,
   nextpdu = coap_peek_next(ctx);
 
   while (nextpdu && now >= ctx->sendqueue_basetime && nextpdu->t <= now - ctx->sendqueue_basetime) {
-    nextpdu->t = 0;
     coap_retransmit(ctx, coap_pop_next(ctx));
     nextpdu = coap_peek_next(ctx);
   }
diff --git a/src/net.c b/src/net.c
index d0a4cd59..cacf5265 100644
--- a/src/net.c
+++ b/src/net.c
@@ -2349,7 +2349,6 @@ 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);
     }