diff --git a/projects/fmcadc4/zc706/system_constr.xdc b/projects/fmcadc4/zc706/system_constr.xdc
index 04f47ffff..49aa12be9 100644
--- a/projects/fmcadc4/zc706/system_constr.xdc
+++ b/projects/fmcadc4/zc706/system_constr.xdc
@@ -47,12 +47,4 @@ set_property  -dict {PACKAGE_PIN  AE23  IOSTANDARD LVCMOS25} [get_ports ad9234_2
 
 create_clock -name rx_ref_clk   -period  2.00 [get_ports rx_ref_clk_p]
 create_clock -name rx_div_clk   -period  4.00 [get_nets i_system_wrapper/system_i/axi_fmcadc4_gt_rx_clk]
-create_clock -name fmc_dma_clk  -period  5.00 [get_pins i_system_wrapper/system_i/sys_ps7/FCLK_CLK2]
-create_clock -name pl_ddr_clk   -period  5.00 [get_pins i_system_wrapper/system_i/plddr3_fifo/axi_ddr_cntrl/ui_clk]
-create_clock -name pl_dma_clk   -period 15.62 [get_pins i_system_wrapper/system_i/plddr3_fifo/axi_ddr_cntrl/ui_addn_clk_0]
-
-set_clock_groups -asynchronous -group {rx_div_clk}
-set_clock_groups -asynchronous -group {fmc_dma_clk}
-set_clock_groups -asynchronous -group {pl_ddr_clk}
-set_clock_groups -asynchronous -group {pl_dma_clk}