diff --git a/api/server/router/build/build_routes.go b/api/server/router/build/build_routes.go
index d195e3d54c..75e4c341e8 100644
--- a/api/server/router/build/build_routes.go
+++ b/api/server/router/build/build_routes.go
@@ -345,6 +345,11 @@ func (r *rcNotifier) Read(b []byte) (int, error) {
 	return n, err
 }
 
+func (r *rcNotifier) Close() error {
+	r.notify()
+	return r.Closer.Close()
+}
+
 type wcf struct {
 	writeCloseFlusher
 	mu      sync.Mutex