diff --git a/test/format-test.cc b/test/format-test.cc
index 5712b46f..eb85aac0 100644
--- a/test/format-test.cc
+++ b/test/format-test.cc
@@ -57,6 +57,7 @@ using fmt::basic_writer;
 using fmt::format;
 using fmt::format_error;
 using fmt::string_view;
+using fmt::wstring_view;
 using fmt::memory_buffer;
 using fmt::wmemory_buffer;
 using fmt::fill;
@@ -1470,9 +1471,9 @@ TEST(LiteralsTest, Format) {
   EXPECT_EQ(format(L"{}c{}", L"ab", 1), udl_format_w);
   
   auto udl_format_null_char = "{}c\0d{}"_format("ab", 1);
-  EXPECT_EQ(format("{}c\0d{}", "ab", 1), udl_format_null_char);
+  EXPECT_EQ(string_view("abc\0d1", 6), udl_format_null_char);
   auto udl_format_w_null_char = L"{}c\0d{}"_format(L"ab", 1);
-  EXPECT_EQ(format(L"{}c\0d{}", L"ab", 1), udl_format_w_null_char);
+  EXPECT_EQ(wstring_view(L"abc\0d1", 6), udl_format_w_null_char);
 }
 
 TEST(LiteralsTest, NamedArg) {
@@ -1533,7 +1534,7 @@ TEST(FormatTest, CustomArgFormatter) {
 
 TEST(FormatTest, NonNullTerminatedFormatString) {
   EXPECT_EQ("42", format(string_view("{}foo", 2), 42));
-  EXPECT_EQ("42f\0oo", format(string_view("{}f\0oo", 6), 42));
+  EXPECT_EQ(string_view("42f\0oo", 6), format(string_view("{}f\0oo", 6), 42));
 }
 
 struct variant {