diff --git a/spiOverJtag/constr_cycloneV.tcl b/spiOverJtag/constr_cycloneV.tcl
index afcd80e..db8fd64 100644
--- a/spiOverJtag/constr_cycloneV.tcl
+++ b/spiOverJtag/constr_cycloneV.tcl
@@ -1,2 +1,3 @@
+set_global_assignment -name ENABLE_INIT_DONE_OUTPUT ON
 set_global_assignment -name STRATIXV_CONFIGURATION_SCHEME "ACTIVE SERIAL X4"
 set_global_assignment -name ON_CHIP_BITSTREAM_DECOMPRESSION ON