diff --git a/cmd/tools/vshould-compile-all.v b/cmd/tools/vshould-compile-all.v
index f27a5d7037..adc9402183 100644
--- a/cmd/tools/vshould-compile-all.v
+++ b/cmd/tools/vshould-compile-all.v
@@ -5,6 +5,7 @@ const should_clean = os.args.contains('-c')
 
 fn main() {
 	log.use_stdout()
+	unbuffer_stdout()
 	mut files := []string{}
 	args := os.args#[2..].filter(it != '-c')
 	for a in args {