diff --git a/src/FruUtils.cpp b/src/FruUtils.cpp
index 561b007..b8b1905 100644
--- a/src/FruUtils.cpp
+++ b/src/FruUtils.cpp
@@ -304,7 +304,7 @@
             return resCodes::resErr;
         }
 
-        uint8_t fruAreaSize = *fruBytesIter * fruBlockSize;
+        size_t fruAreaSize = *fruBytesIter * fruBlockSize;
         std::vector<uint8_t>::const_iterator fruBytesIterEndArea =
             fruBytes.begin() + offset + fruAreaSize - 1;
         ++fruBytesIter;