diff --git a/tools/testing/cxl/test/mem.c b/tools/testing/cxl/test/mem.c
index 76bdb1ac5816f..75acc721c7631 100644
--- a/tools/testing/cxl/test/mem.c
+++ b/tools/testing/cxl/test/mem.c
@@ -1270,6 +1270,7 @@ static int mock_transfer_fw(struct cxl_mockmem_data *mdata,
 	}
 
 	memcpy(fw + offset, transfer->data, length);
+	usleep_range(1500, 2000);
 	return 0;
 }