diff --git a/include/fmt/format.h b/include/fmt/format.h
index 4e96539f..20d69351 100644
--- a/include/fmt/format.h
+++ b/include/fmt/format.h
@@ -1287,6 +1287,7 @@ FMT_CONSTEXPR float_specs parse_float_type_spec(
     result.format = float_format::hex;
     break;
   case 'n':
+  case 'L':
     result.locale = true;
     break;
   default:
diff --git a/test/format-test.cc b/test/format-test.cc
index e9304cee..6a873185 100644
--- a/test/format-test.cc
+++ b/test/format-test.cc
@@ -1413,7 +1413,7 @@ TEST(FormatterTest, FormatFloat) {
 }
 
 TEST(FormatterTest, FormatDouble) {
-  check_unknown_types(1.2, "eEfFgGaAn%", "double");
+  check_unknown_types(1.2, "eEfFgGaAnL%", "double");
   EXPECT_EQ("0.0", format("{:}", 0.0));
   EXPECT_EQ("0.000000", format("{:f}", 0.0));
   EXPECT_EQ("0", format("{:g}", 0.0));
@@ -1422,6 +1422,7 @@ TEST(FormatterTest, FormatDouble) {
   EXPECT_EQ("392.65", format("{:G}", 392.65));
   EXPECT_EQ("392.650000", format("{:f}", 392.65));
   EXPECT_EQ("392.650000", format("{:F}", 392.65));
+  EXPECT_EQ("42", format("{:L}", 42.0));
   char buffer[BUFFER_SIZE];
   safe_sprintf(buffer, "%e", 392.65);
   EXPECT_EQ(buffer, format("{0:e}", 392.65));