diff --git a/aplay/aplay.c b/aplay/aplay.c
index 68fac64..665feb4 100644
--- a/aplay/aplay.c
+++ b/aplay/aplay.c
@@ -1239,6 +1239,7 @@ static void compute_max_peak(u_char *data, size_t count)
 			else
 				putchar(' ');
 		printf(" %i%%\n", perc);
+		fflush(stdout);
 	}
 }