diff --git a/library/common/up_dac_common.v b/library/common/up_dac_common.v
index 1b6013585..c2b144394 100644
--- a/library/common/up_dac_common.v
+++ b/library/common/up_dac_common.v
@@ -223,7 +223,7 @@ module up_dac_common (
       up_drp_wdata <= 'd0;
       up_drp_rdata_hold <= 'd0;
       up_status_ovf <= 'd0;
-      up_status_ovf <= 'd0;
+      up_status_unf <= 'd0;
       up_usr_chanmax <= 'd0;
       up_dac_gpio_out <= 'd0;
     end else begin