diff --git a/libpldmresponder/bios_string_attribute.cpp b/libpldmresponder/bios_string_attribute.cpp
index d52cdc4..d55c99a 100644
--- a/libpldmresponder/bios_string_attribute.cpp
+++ b/libpldmresponder/bios_string_attribute.cpp
@@ -33,8 +33,9 @@
 
     stringInfo.minLength = entry.at("minimum_string_length");
     stringInfo.maxLength = entry.at("maximum_string_length");
-    stringInfo.defLength = entry.at("default_string_length");
     stringInfo.defString = entry.at("default_string");
+    stringInfo.defLength =
+        static_cast<uint16_t>((stringInfo.defString).length());
 
     pldm_bios_table_attr_entry_string_info info = {
         0,