diff --git a/projects/mips_sys/ise101/mips_sys/ucf/systest.ucf b/projects/mips_sys/ise101/mips_sys/ucf/systest.ucf
index 8114d75..0eab88d 100644
--- a/projects/mips_sys/ise101/mips_sys/ucf/systest.ucf
+++ b/projects/mips_sys/ise101/mips_sys/ucf/systest.ucf
@@ -315,6 +315,7 @@ NET sys_usb_d<*>   IOSTANDARD = LVCMOS33;
 NET sys_usb_d<*>   SLEW       = FAST;
 NET sys_usb_d<*>   DRIVE      = 8;
 NET sys_usb_d<*>   PULLDOWN;
+NET sys_usb_d<*>   IOBDELAY = NONE; 
 
 NET sys_usb_rdn    LOC        = AA8;
 NET sys_usb_rdn    IOSTANDARD = LVCMOS33;
@@ -412,6 +413,7 @@ NET sys_flash_a<*>  DRIVE = 8;
 NET sys_flash_d<*> IOSTANDARD = LVCMOS33;
 NET sys_flash_d<*> DRIVE = 12;
 NET sys_flash_d<*> SLEW = FAST;
+NET sys_flash_d<*> IOBDELAY = NONE; 
 NET sys_flash_d<*> PULLDOWN;
 
 NET sys_flash_rdn    IOSTANDARD = LVDCI_33;