diff --git a/coding/coding_tests/reader_writer_ops_test.cpp b/coding/coding_tests/reader_writer_ops_test.cpp
index 9b2a91191c..0ca1dccc6a 100644
--- a/coding/coding_tests/reader_writer_ops_test.cpp
+++ b/coding/coding_tests/reader_writer_ops_test.cpp
@@ -111,7 +111,7 @@ UNIT_TEST(ReadWrite_POD)
   rw::WriteVectorOfPOD(sink, src);
 
   buffer_vector<ThePOD, 128> dest;
-  ArrayByteSource byteSrc(buffer.data());
+  ArrayByteSource byteSrc(&buffer.at(0));
   rw::ReadVectorOfPOD(byteSrc, dest);
 
   TEST(equal(src.begin(), src.end(), dest.begin()), ());