diff --git a/qpid/cpp/include/qpid/framing/FieldValue.h b/qpid/cpp/include/qpid/framing/FieldValue.h
index 7b4dee1..df56701 100644
--- a/qpid/cpp/include/qpid/framing/FieldValue.h
+++ b/qpid/cpp/include/qpid/framing/FieldValue.h
@@ -202,7 +202,7 @@ inline T FieldValue::getFloatingPointValue() const {
         T value;
         uint8_t* const octets = convertIfRequired(fwv->rawOctets(), W);
         uint8_t* const target = reinterpret_cast<uint8_t*>(&value);
-        for (uint i = 0; i < W; ++i) target[i] = octets[i];
+        for (uint32_t i = 0; i < W; ++i) target[i] = octets[i];
         return value;
     } else {
         throw InvalidConversionException();