diff --git a/fpga/mqnic/VCU108/fpga_10g/tb/fpga_core/Makefile b/fpga/mqnic/VCU108/fpga_10g/tb/fpga_core/Makefile
index 2b03df73a..1abc9b7b9 100644
--- a/fpga/mqnic/VCU108/fpga_10g/tb/fpga_core/Makefile
+++ b/fpga/mqnic/VCU108/fpga_10g/tb/fpga_core/Makefile
@@ -151,6 +151,7 @@ export PARAM_PTP_CLK_PERIOD_NS_DENOM = 5
 export PARAM_PTP_CLOCK_PIPELINE ?= 0
 export PARAM_PTP_CLOCK_CDC_PIPELINE ?= 0
 export PARAM_PTP_USE_SAMPLE_CLOCK ?= 1
+export PARAM_PTP_PORT_CDC_PIPELINE ?= 0
 export PARAM_PTP_PEROUT_ENABLE ?= 1
 export PARAM_PTP_PEROUT_COUNT ?= 1