diff --git a/src/daemon/toks_daemon_cancel.c b/src/daemon/toks_daemon_cancel.c
index 9671d2a..548369b 100644
--- a/src/daemon/toks_daemon_cancel.c
+++ b/src/daemon/toks_daemon_cancel.c
@@ -36,6 +36,7 @@ int32_t __stdcall toks_daemon_cancel(struct toks_daemon_ctx * dctx)
 		if (waiter->msg.header.client_id.process_id == cid->process_id) {
 			if (waiter->msg.header.client_id.thread_id == cid->thread_id) {
 				waiter->msg.header.msg_id = 0;
+				toks_set_driver_nwaiters(dctx->driver_ctx,--nwaiters);
 				return NT_STATUS_CANCELLED;
 			}
 		}
@@ -51,6 +52,7 @@ int32_t __stdcall toks_daemon_cancel(struct toks_daemon_ctx * dctx)
 		if (waiter->msg.header.client_id.process_id == cid->process_id) {
 			if (waiter->msg.header.client_id.thread_id == cid->thread_id) {
 				waiter->msg.header.msg_id = 0;
+				toks_set_driver_nwaiters(dctx->driver_ctx,--nwaiters);
 				return NT_STATUS_CANCELLED;
 			}
 		}