diff --git a/boards/uniboard2/designs/unb2_minimal/tb/vhdl/tb_unb2_minimal.vhd b/boards/uniboard2/designs/unb2_minimal/tb/vhdl/tb_unb2_minimal.vhd
index 8cbb1e7cfbc65bfe65d5794ab6d4580046abeb77..8bc8b42190fa6b3653504a57ec4533f1df9ea37a 100644
--- a/boards/uniboard2/designs/unb2_minimal/tb/vhdl/tb_unb2_minimal.vhd
+++ b/boards/uniboard2/designs/unb2_minimal/tb/vhdl/tb_unb2_minimal.vhd
@@ -93,6 +93,10 @@ ARCHITECTURE tb OF tb_unb2_minimal IS
   SIGNAL sens_scl            : STD_LOGIC;
   SIGNAL sens_sda            : STD_LOGIC;
 
+  SIGNAL PMBUS_SC            : STD_LOGIC;
+  SIGNAL PMBUS_SD            : STD_LOGIC;
+  SIGNAL PMBUS_ALERT         : STD_LOGIC := '0';
+  
   SIGNAL qsfp_led            : STD_LOGIC_VECTOR(c_unb2_board_tr_qsfp_nof_leds-1 DOWNTO 0);
 
   -- Model I2C sensor slaves as on the UniBoard
@@ -121,6 +125,9 @@ BEGIN
   sens_scl <= 'H';  -- pull up
   sens_sda <= 'H';  -- pull up
 
+  PMBUS_SC <= 'H';  -- pull up
+  PMBUS_SD <= 'H';  -- pull up
+  
   ------------------------------------------------------------------------------
   -- External PPS
   ------------------------------------------------------------------------------  
@@ -154,6 +161,10 @@ BEGIN
 
       sens_sc     => sens_scl,
       sens_sd     => sens_sda,
+      
+      PMBUS_SC    => PMBUS_SC,
+      PMBUS_SD    => PMBUS_SD,
+      PMBUS_ALERT => PMBUS_ALERT,
 
       -- Others
       VERSION     => VERSION,