diff --git a/include/fmt/format-inl.h b/include/fmt/format-inl.h
index 582c6193..fb4b4b1c 100644
--- a/include/fmt/format-inl.h
+++ b/include/fmt/format-inl.h
@@ -441,7 +441,7 @@ class fp {
                                       std::numeric_limits<float>::digits - 1);
     if (min_normal_e > e) half_ulp <<= min_normal_e - e;
     upper = normalize<0>(fp(f + half_ulp, e));
-    lower = fp(f - (half_ulp >> (f == implicit_bit && e > min_normal_e)), e);
+    lower = fp(f - (half_ulp >> ((f == implicit_bit && e > min_normal_e) ? 1 : 0)), e);
     lower.f <<= lower.e - upper.e;
     lower.e = upper.e;
   }
diff --git a/include/fmt/format.h b/include/fmt/format.h
index 9ca0be18..5ff4c86f 100644
--- a/include/fmt/format.h
+++ b/include/fmt/format.h
@@ -2805,7 +2805,7 @@ void internal::basic_writer<Range>::write_fp(T value,
   int precision = specs.precision >= 0 || !specs.type ? specs.precision : 6;
   unsigned options = 0;
   if (handler.fixed) options |= grisu_options::fixed;
-  if (sizeof(value) == sizeof(float)) options |= grisu_options::binary32;
+  if constexpr (sizeof(value) == sizeof(float)) options |= grisu_options::binary32;
   bool use_grisu =
       USE_GRISU &&
       (specs.type != 'a' && specs.type != 'A' && specs.type != 'e' &&