diff --git a/litex_boards/targets/xilinx_zc706.py b/litex_boards/targets/xilinx_zc706.py
index c46db4b..08bbaa8 100755
--- a/litex_boards/targets/xilinx_zc706.py
+++ b/litex_boards/targets/xilinx_zc706.py
@@ -93,7 +93,7 @@ class BaseSoC(SoCCore):
 
         # When nor jtagbone, nor etherbone are set forces jtagbone.
         kwargs["uart_name"]     = "crossover"
-        if kwargs["with_jtagbone"] or with_etherbone:
+        if not (kwargs["with_jtagbone"] or with_etherbone):
             kwargs["with_jtagbone"] = True
 
         # CRG --------------------------------------------------------------------------------------