diff --git a/include/fast_float/decimal_to_binary.h b/include/fast_float/decimal_to_binary.h
index 1db1055..799c074 100644
--- a/include/fast_float/decimal_to_binary.h
+++ b/include/fast_float/decimal_to_binary.h
@@ -73,7 +73,7 @@ constexpr fastfloat_really_inline am_pow_t power(am_pow_t const q) noexcept {
 // for significant digits already multiplied by 10 ** q.
 template <typename binary>
 fastfloat_really_inline FASTFLOAT_CONSTEXPR14 adjusted_mantissa
-compute_error_scaled(am_pow_t q, am_mant_t w, am_bits_t lz) noexcept {
+compute_error_scaled(am_pow_t q, am_mant_t w, limb_t lz) noexcept {
   auto const hilz = static_cast<am_bits_t>((w >> 63) ^ 1);
   adjusted_mantissa answer;
   answer.mantissa = w << hilz;