diff --git a/src/ipmiblob/blob_handler.cpp b/src/ipmiblob/blob_handler.cpp
index 8ec3f9c..b91b775 100644
--- a/src/ipmiblob/blob_handler.cpp
+++ b/src/ipmiblob/blob_handler.cpp
@@ -233,7 +233,7 @@
     std::uint8_t len = resp[offset];
     if (len > 0)
     {
-        std::copy(&resp[offset + 1], &resp[resp.size()],
+        std::copy(resp.begin() + offset + sizeof(len), resp.end(),
                   std::back_inserter(meta.metadata));
     }