diff --git a/mongoose.c b/mongoose.c
index a08c800c..87703df3 100644
--- a/mongoose.c
+++ b/mongoose.c
@@ -2928,10 +2928,12 @@ static int mg_recv_tcp(struct mg_connection *nc, char *buf, size_t len) {
       mg_hexdump_connection(nc, nc->mgr->hexdump_file, buf, n, MG_EV_RECV);
     }
 #endif
+    mbuf_trim(&nc->recv_mbuf);
     mg_call(nc, NULL, nc->user_data, MG_EV_RECV, &n);
   } else if (n < 0) {
     nc->flags |= MG_F_CLOSE_IMMEDIATELY;
   }
+  mbuf_trim(&nc->recv_mbuf);
   return n;
 }
 
diff --git a/src/mg_net.c b/src/mg_net.c
index 2aed7df0..1bf5716b 100644
--- a/src/mg_net.c
+++ b/src/mg_net.c
@@ -619,10 +619,12 @@ static int mg_recv_tcp(struct mg_connection *nc, char *buf, size_t len) {
       mg_hexdump_connection(nc, nc->mgr->hexdump_file, buf, n, MG_EV_RECV);
     }
 #endif
+    mbuf_trim(&nc->recv_mbuf);
     mg_call(nc, NULL, nc->user_data, MG_EV_RECV, &n);
   } else if (n < 0) {
     nc->flags |= MG_F_CLOSE_IMMEDIATELY;
   }
+  mbuf_trim(&nc->recv_mbuf);
   return n;
 }