diff --git a/library/xilinx/util_adxcvr/util_adxcvr_xch.v b/library/xilinx/util_adxcvr/util_adxcvr_xch.v
index 19c9fbde0..6901242e9 100644
--- a/library/xilinx/util_adxcvr/util_adxcvr_xch.v
+++ b/library/xilinx/util_adxcvr/util_adxcvr_xch.v
@@ -1907,7 +1907,6 @@ module util_adxcvr_xch #(
     .SIM_RECEIVER_DETECT_PASS ("TRUE"),
     .SIM_RESET_SPEEDUP ("TRUE"),
     .SIM_TX_EIDLE_DRIVE_LEVEL ("Z"),
-    .SIM_VERSION (1'h1),
     .SRSTMODE (1'b0),
     .TAPDLY_SET_TX (2'h0),
     .TEMPERATURE_PAR (4'b0010),
diff --git a/library/xilinx/util_adxcvr/util_adxcvr_xcm.v b/library/xilinx/util_adxcvr/util_adxcvr_xcm.v
index df96df179..e647950ae 100644
--- a/library/xilinx/util_adxcvr/util_adxcvr_xcm.v
+++ b/library/xilinx/util_adxcvr/util_adxcvr_xcm.v
@@ -395,8 +395,7 @@ module util_adxcvr_xcm #(
     .SDM1INITSEED0_0 (16'b0000000100010001),
     .SDM1INITSEED0_1 (9'b000010001),
     .SIM_MODE ("FAST"),
-    .SIM_RESET_SPEEDUP ("TRUE"),
-    .SIM_VERSION (1'h1)) 
+    .SIM_RESET_SPEEDUP ("TRUE"))
   i_gthe4_common (
     .BGBYPASSB (1'd1),
     .BGMONITORENB (1'd1),