diff --git a/tcl/board/digilent_zybo.cfg b/tcl/board/digilent_zybo.cfg
index 97d54302a..8573399f8 100644
--- a/tcl/board/digilent_zybo.cfg
+++ b/tcl/board/digilent_zybo.cfg
@@ -1,8 +1,11 @@
 # SPDX-License-Identifier: GPL-2.0-or-later
 
-# digilent zybo
+# Digilent Zybo
 # https://digilent.com/reference/programmable-logic/zybo/start
 
+# Tested with the Zybo board from Digilent (older).
+# Not tested with the Zybo Z7 board from Digilent (newer).
+
 
 adapter driver ftdi
 ftdi channel 0