diff --git a/benchmarks/benchmark.cpp b/benchmarks/benchmark.cpp
index eaa7d6c..048df8f 100644
--- a/benchmarks/benchmark.cpp
+++ b/benchmarks/benchmark.cpp
@@ -216,7 +216,8 @@ void fileload(std::string filename) {
       line.erase(0, 1);
     }
 #endif
-    volume += lines.emplace_back(line).size();
+    lines.emplace_back(line);
+    volume += line.size();
   }
   std::cout << "# read " << lines.size() << " lines " << std::endl;
   process(lines, volume);
diff --git a/include/fast_float/float_common.h b/include/fast_float/float_common.h
index 048aed5..bd952ee 100644
--- a/include/fast_float/float_common.h
+++ b/include/fast_float/float_common.h
@@ -577,7 +577,7 @@ template <typename U>
 constexpr float binary_format_lookup_tables<float, U>::powers_of_ten[];
 
 template <typename U>
-constexpr uint64_t binary_format_lookup_tables<float, U>::max_mantissa[];
+constexpr uint32_t binary_format_lookup_tables<float, U>::max_mantissa[];
 
 #endif