diff --git a/tools/dmsetup.c b/tools/dmsetup.c
index d25b3bdea..44ea6f9b4 100644
--- a/tools/dmsetup.c
+++ b/tools/dmsetup.c
@@ -7080,6 +7080,7 @@ doit:
 
 			if (_count > 1 && r) {
 				printf("\n");
+				fflush(stdout);
 				/* wait for --interval and update timestamps */
 				if (!_do_report_wait()) {
 					ret = 1;