diff --git a/include/fmt/chrono.h b/include/fmt/chrono.h
index 8f5426f2..7bd4206d 100644
--- a/include/fmt/chrono.h
+++ b/include/fmt/chrono.h
@@ -582,8 +582,9 @@ template <typename Period> FMT_CONSTEXPR inline const char* get_units() {
   if (std::is_same<Period, std::tera>::value) return "Ts";
   if (std::is_same<Period, std::peta>::value) return "Ps";
   if (std::is_same<Period, std::exa>::value) return "Es";
-  if (std::is_same<Period, std::ratio<60>>::value) return "m";
+  if (std::is_same<Period, std::ratio<60>>::value) return "min";
   if (std::is_same<Period, std::ratio<3600>>::value) return "h";
+  if (std::is_same<Period, std::ratio<86400>>::value) return "d";
   return nullptr;
 }
 
diff --git a/test/chrono-test.cc b/test/chrono-test.cc
index f047c1ea..c218a873 100644
--- a/test/chrono-test.cc
+++ b/test/chrono-test.cc
@@ -454,8 +454,11 @@ TEST(chrono_test, format_default) {
             fmt::format("{}", std::chrono::duration<int, std::peta>(42)));
   EXPECT_EQ("42Es",
             fmt::format("{}", std::chrono::duration<int, std::exa>(42)));
-  EXPECT_EQ("42m", fmt::format("{}", std::chrono::minutes(42)));
+  EXPECT_EQ("42min", fmt::format("{}", std::chrono::minutes(42)));
   EXPECT_EQ("42h", fmt::format("{}", std::chrono::hours(42)));
+#  if defined(__cpp_lib_chrono) && __cpp_lib_chrono >= 201907L
+  EXPECT_EQ("42d", fmt::format("{}", std::chrono::days(42)));
+#  endif
   EXPECT_EQ(
       "42[15]s",
       fmt::format("{}", std::chrono::duration<int, std::ratio<15, 1>>(42)));