diff --git a/projects/fmcadc2/zc706/system_constr.xdc b/projects/fmcadc2/zc706/system_constr.xdc
index 15520a7e6..3cd0bb314 100644
--- a/projects/fmcadc2/zc706/system_constr.xdc
+++ b/projects/fmcadc2/zc706/system_constr.xdc
@@ -39,5 +39,5 @@ set_property  -dict {PACKAGE_PIN  AJ19  IOSTANDARD LVCMOS25} [get_ports adc_fd]
 # clocks
 
 create_clock -name rx_ref_clk   -period  1.60 [get_ports rx_ref_clk_p]
-create_clock -name rx_div_clk   -period  6.40 [get_nets i_system_wrapper/system_i/axi_ad9625_gt_rx_clk]
+create_clock -name rx_div_clk   -period  6.40 [get_pins i_system_wrapper/system_i/axi_ad9625_gt/inst/g_lane_1[0].i_gt_channel_1/i_gtxe2_channel/RXOUTCLK]