diff --git a/boards/uniboard2/designs/unb2_minimal/src/vhdl/unb2_minimal.vhd b/boards/uniboard2/designs/unb2_minimal/src/vhdl/unb2_minimal.vhd
index fe73980bf1300d22c7a73090d3463b084f5dff2e..28a3efcb29302ceee9d784e12f83ecd7e5d98a39 100644
--- a/boards/uniboard2/designs/unb2_minimal/src/vhdl/unb2_minimal.vhd
+++ b/boards/uniboard2/designs/unb2_minimal/src/vhdl/unb2_minimal.vhd
@@ -60,7 +60,7 @@ ENTITY unb2_minimal IS
 
     PMBUS_SC     : INOUT STD_LOGIC;
     PMBUS_SD     : INOUT STD_LOGIC;
-    PMBUS_ALERT  : IN    STD_LOGIC;
+    PMBUS_ALERT  : IN    STD_LOGIC := '0';
   
     -- 1GbE Control Interface
     ETH_CLK      : IN    STD_LOGIC;