diff --git a/tools/testing/selftests/filesystems/incfs/incfs_test.c b/tools/testing/selftests/filesystems/incfs/incfs_test.c
index b3773bd1df91..10c15fadc959 100644
--- a/tools/testing/selftests/filesystems/incfs/incfs_test.c
+++ b/tools/testing/selftests/filesystems/incfs/incfs_test.c
@@ -1484,7 +1484,7 @@ static int concurrent_reads_and_writes_test(const char *mount_dir)
 		goto failure;
 
 	/* Mount FS and release the backing file. */
-	if (mount_fs(mount_dir, backing_dir, 50) != 0)
+	if (mount_fs(mount_dir, backing_dir, 500) != 0)
 		goto failure;
 	free(backing_dir);