diff --git a/projects/common/zc706/zc706_system_constr.xdc b/projects/common/zc706/zc706_system_constr.xdc
index b37708619..b24b7baa9 100644
--- a/projects/common/zc706/zc706_system_constr.xdc
+++ b/projects/common/zc706/zc706_system_constr.xdc
@@ -1,5 +1,8 @@
 
 # constraints
+
+set_property  -dict {PACKAGE_PIN  A8    IOSTANDARD LVCMOS15} [get_ports sys_rst]
+
 # hdmi
 
 set_property  -dict {PACKAGE_PIN  P28   IOSTANDARD LVCMOS25} [get_ports hdmi_out_clk]