diff --git a/projects/adrv9009/zc706/system_top.v b/projects/adrv9009/zc706/system_top.v
index 1ae68deb6..5a8ad4f59 100644
--- a/projects/adrv9009/zc706/system_top.v
+++ b/projects/adrv9009/zc706/system_top.v
@@ -261,6 +261,10 @@ module system_top (
     .O (ref_clk1),
     .ODIV2 ());
 
+  BUFG i_bufg_ref_clk (
+    .I (ref_clk1),
+    .O (ref_clk1_bufg));
+
   OBUFDS i_obufds_rx_sync (
     .I (rx_sync),
     .O (rx_sync_p),
@@ -426,7 +430,8 @@ module system_top (
     .tx_data_3_p (tx_data_p[3]),
     .tx_ref_clk_0 (ref_clk1),
     .tx_sync_0 (tx_sync),
-    .tx_sysref_0 (sysref));
+    .tx_sysref_0 (sysref),
+    .ref_clk (ref_clk1_bufg));
 
 endmodule