diff --git a/include/fast_float/ascii_number.h b/include/fast_float/ascii_number.h
index cc4bd2a..016aec1 100644
--- a/include/fast_float/ascii_number.h
+++ b/include/fast_float/ascii_number.h
@@ -367,7 +367,7 @@ parse_number_string(UC const *p, UC const *pend,
       i = i * 10 + digit; // in rare cases, this will overflow, but that's ok
       ++p;
     }
-    exponent = static_cast<int16_t>(before - p);
+    exponent = int16_t(before - p);
     answer.fraction = span<UC const>(before, size_t(p - before));
     digit_count -= exponent;
   }