diff --git a/boards/uniboard2b/libraries/unb2b_board/unb2b_board.peripheral.yaml b/boards/uniboard2b/libraries/unb2b_board/unb2b_board.peripheral.yaml
index f458a6c1d7f5b8b52a1c0b7c3714eca7f0712cac..e0c389069ab8c280cd7bf8f6dd9c24525d40ba0a 100644
--- a/boards/uniboard2b/libraries/unb2b_board/unb2b_board.peripheral.yaml
+++ b/boards/uniboard2b/libraries/unb2b_board/unb2b_board.peripheral.yaml
@@ -104,6 +104,7 @@ peripherals:
               address_offset: 0x8
               number_of_fields: 13
               radix: char
+              radix_width: 8
           - - field_name: stamp_date
               field_description: "FPGA FW compile date string."
               access_mode: RO
@@ -126,6 +127,7 @@ peripherals:
               address_offset: 0x50
               number_of_fields: 13
               radix: char
+              radix_width: 8
               
   - peripheral_name: wdi  # pi_wdi.py
     peripheral_description: ""