diff --git a/src/gdbstub.c b/src/gdbstub.c
index 900f40dab..2f60a3d16 100644
--- a/src/gdbstub.c
+++ b/src/gdbstub.c
@@ -1513,6 +1513,7 @@ gdbstub_client_thread(void *priv)
                 case '$': /* packet start */
                     /* Wait for any existing packets to be processed. */
                     thread_wait_event(client->processed_event, -1);
+                    thread_set_event(client->processed_event);
 
                     client->packet_pos = 0;
                     break;
@@ -1539,6 +1540,7 @@ gdbstub_client_thread(void *priv)
                 default:
                     /* Wait for any existing packets to be processed, just in case. */
                     thread_wait_event(client->processed_event, -1);
+                    thread_set_event(client->processed_event);
 
                     if (client->packet_pos < (sizeof(client->packet) - 1)) {
                         /* Append byte to the packet. */