diff --git a/source/utils/path.cpp b/source/utils/path.cpp
index 93540bfe..02bb1d45 100644
--- a/source/utils/path.cpp
+++ b/source/utils/path.cpp
@@ -231,7 +231,7 @@ const std::string &path::string() const
 #ifdef _MSC_VER
 std::wstring path::wstring() const
 {
-    std::wstring_convert<std::codecvt_utf8<wchar_t>> convert;
+    std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> convert;
     return convert.from_bytes(string());
 }
 #endif
diff --git "a/tests/data/9_unicode_\316\233.xlsx" "b/tests/data/9_unicode_\316\233_\360\237\230\207.xlsx"
similarity index 100%
rename from "tests/data/9_unicode_\316\233.xlsx"
rename to "tests/data/9_unicode_\316\233_\360\237\230\207.xlsx"
diff --git a/tests/workbook/serialization_test_suite.cpp b/tests/workbook/serialization_test_suite.cpp
index 73bdc32d..14d27f24 100644
--- a/tests/workbook/serialization_test_suite.cpp
+++ b/tests/workbook/serialization_test_suite.cpp
@@ -366,18 +366,18 @@ class serialization_test_suite : public test_suite
     {
 #ifdef _MSC_VER
         xlnt::workbook wb;
-        // L"/9_unicode_Λ.xlsx" doesn't use wchar_t(0x039B) for the capital lambda...
-        // L"/9_unicode_\u039B.xlsx" gives the corrct output
-        const auto path = LSTRING_LITERAL(XLNT_TEST_DATA_DIR) L"/9_unicode_\u039B.xlsx"; // L"/9_unicode_Λ.xlsx"
+        // L"/9_unicode_Λ_😇.xlsx" doesn't use wchar_t(0x039B) for the capital lambda...
+        // L"/9_unicode_\u039B_\U0001F607.xlsx" gives the correct output
+        const auto path = LSTRING_LITERAL(XLNT_TEST_DATA_DIR) L"/9_unicode_\u039B_\U0001F607.xlsx"; // L"/9_unicode_Λ_😇.xlsx"
         wb.load(path);
         xlnt_assert_equals(wb.active_sheet().cell("A1").value<std::string>(), u8"un\u00EFc\u00F4d\u0117!"); // u8"unïcôdė!"
 #endif
 
 #ifndef __MINGW32__
         xlnt::workbook wb2;
-        // u8"/9_unicode_Λ.xlsx" doesn't use 0xc3aa for the capital lambda...
-        // u8"/9_unicode_\u039B.xlsx" gives the corrct output
-        const auto path2 = U8STRING_LITERAL(XLNT_TEST_DATA_DIR) u8"/9_unicode_\u039B.xlsx"; // u8"/9_unicode_Λ.xlsx"
+        // u8"/9_unicode_Λ_😇.xlsx" doesn't use 0xC3AA for the capital lambda...
+        // u8"/9_unicode_\u039B_\U0001F607.xlsx" gives the correct output
+        const auto path2 = U8STRING_LITERAL(XLNT_TEST_DATA_DIR) u8"/9_unicode_\u039B_\U0001F607.xlsx"; // u8"/9_unicode_Λ_😇.xlsx"
         wb2.load(path2);
         xlnt_assert_equals(wb2.active_sheet().cell("A1").value<std::string>(), u8"un\u00EFc\u00F4d\u0117!"); // u8"unïcôdė!"
 #endif
@@ -633,9 +633,9 @@ class serialization_test_suite : public test_suite
 
     void test_round_trip_rw_unicode()
     {
-        // u8"/9_unicode_Λ.xlsx" doesn't use 0xc3aa for the capital lambda...
-        // u8"/9_unicode_\u039B.xlsx" gives the corrct output
-        xlnt_assert(round_trip_matches_rw(path_helper::test_file(u8"9_unicode_\u039B.xlsx")));
+        // u8"/9_unicode_Λ_😇.xlsx" doesn't use 0xC3AA for the capital lambda...
+        // u8"/9_unicode_\u039B_\U0001F607.xlsx" gives the correct output
+        xlnt_assert(round_trip_matches_rw(path_helper::test_file(u8"9_unicode_\u039B_\U0001F607.xlsx")));
     }
 
     void test_round_trip_rw_comments_hyperlinks_formulae()