diff --git a/i2c-vr/mps/mp5998.cpp b/i2c-vr/mps/mp5998.cpp
index c30540e..85939a5 100644
--- a/i2c-vr/mps/mp5998.cpp
+++ b/i2c-vr/mps/mp5998.cpp
@@ -93,7 +93,7 @@
         co_return false;
     }
 
-    size_t bufferSize;
+    size_t bufferSize = 0;
 
     if (idCmd == PMBusCmd::mfrId)
     {