diff --git a/tools/test/stress2/tools/flip.c b/tools/test/stress2/tools/flip.c
index e1f12e97a79..cdc2742de59 100644
--- a/tools/test/stress2/tools/flip.c
+++ b/tools/test/stress2/tools/flip.c
@@ -131,7 +131,7 @@ main(int argc, char *argv[])
 			err(1, "lseek()");
 		if (read(fd, &c, 1) != 1)
 			err(1, "read()");
-		if (arc4random() % 100 < 80)
+		if (arc4random() % 100 < 98)
 			flip(&c, 1);
 		else
 			trash(&c);