diff --git a/typecd/peripheral.cc b/typecd/peripheral.cc
index 5f4322b..70946ac 100644
--- a/typecd/peripheral.cc
+++ b/typecd/peripheral.cc
@@ -40,27 +40,30 @@
 
   if (!ReadHexFromPath(product, &product_vdo))
     return;
-  LOG(INFO) << "Peripheral Product VDO: " << product_vdo;
+  LOG(INFO) << "Peripheral Product VDO: " << std::hex << product_vdo;
 
   if (!ReadHexFromPath(cert_stat, &cert_stat_vdo))
     return;
-  LOG(INFO) << "Peripheral Cert stat VDO: " << cert_stat_vdo;
+  LOG(INFO) << "Peripheral Cert stat VDO: " << std::hex << cert_stat_vdo;
 
   if (!ReadHexFromPath(id_header, &id_header_vdo))
     return;
-  LOG(INFO) << "Peripheral Id Header VDO: " << id_header_vdo;
+  LOG(INFO) << "Peripheral Id Header VDO: " << std::hex << id_header_vdo;
 
   if (!ReadHexFromPath(product_type1, &product_type_vdo1))
     return;
-  LOG(INFO) << "Peripheral Product Type VDO 1: " << product_type_vdo1;
+  LOG(INFO) << "Peripheral Product Type VDO 1: " << std::hex
+            << product_type_vdo1;
 
   if (!ReadHexFromPath(product_type2, &product_type_vdo2))
     return;
-  LOG(INFO) << "Peripheral Product Type VDO 2: " << product_type_vdo2;
+  LOG(INFO) << "Peripheral Product Type VDO 2: " << std::hex
+            << product_type_vdo2;
 
   if (!ReadHexFromPath(product_type3, &product_type_vdo3))
     return;
-  LOG(INFO) << "Peripheral Product Type VDO 3: " << product_type_vdo3;
+  LOG(INFO) << "Peripheral Product Type VDO 3: " << std::hex
+            << product_type_vdo3;
 
   SetIdHeaderVDO(id_header_vdo);
   SetProductVDO(product_vdo);