diff --git a/projects/imageon_loopback/zed/system_top.v b/projects/imageon_loopback/zed/system_top.v
index 2439d6129..55ab81679 100644
--- a/projects/imageon_loopback/zed/system_top.v
+++ b/projects/imageon_loopback/zed/system_top.v
@@ -173,18 +173,23 @@ module system_top (
 
   wire            hdmi_rx_clk;
   wire            hdmi_tx_clk;
+  wire            hdmi_rx_clk_bufio;
 
   wire    [15:0]  hdmi_rx_data;
   reg     [15:0]  hdmi_rx_data_in;
   reg     [15:0]  hdmi_tx_data;
   
-  always @(posedge hdmi_rx_clk) begin
+  always @(posedge hdmi_rx_clk_bufio) begin
     hdmi_rx_data_in <= hdmi_rx_data;
     hdmi_tx_data <= hdmi_rx_data_in;
   end
 
   // instantiations
 
+  BUFIO (
+    .I (hdmi_rx_clk),
+    .O (hdmi_rx_clk_bufio));
+
   ODDR #(.INIT(1'b0)) i_clk_oddr (
     .R (1'b0),
     .S (1'b0),