diff --git a/include/SFML/System/Utf.inl b/include/SFML/System/Utf.inl
index f01ba7a2..02211135 100644
--- a/include/SFML/System/Utf.inl
+++ b/include/SFML/System/Utf.inl
@@ -657,28 +657,11 @@ Out Utf<32>::toUtf32(In begin, In end, Out output)
 template <typename In>
 std::uint32_t Utf<32>::decodeAnsi(In input, [[maybe_unused]] const std::locale& locale)
 {
-    // On Windows, GCC's standard library (glibc++) has almost
-    // no support for Unicode stuff. As a consequence, in this
-    // context we can only use the default locale and ignore
-    // the one passed as parameter.
-
-#if defined(SFML_SYSTEM_WINDOWS) &&                         /* if Windows ... */                          \
-    (defined(__GLIBCPP__) || defined(__GLIBCXX__)) &&       /* ... and standard library is glibc++ ... */ \
-    !(defined(__SGI_STL_PORT) || defined(_STLPORT_VERSION)) /* ... and STLPort is not used on top of it */
-
-    wchar_t character = 0;
-    mbtowc(&character, &input, 1);
-    return static_cast<std::uint32_t>(character);
-
-#else
-
     // Get the facet of the locale which deals with character conversion
     const auto& facet = std::use_facet<std::ctype<wchar_t>>(locale);
 
     // Use the facet to convert each character of the input string
     return static_cast<std::uint32_t>(facet.widen(input));
-
-#endif
 }
 
 
@@ -700,25 +683,6 @@ std::uint32_t Utf<32>::decodeWide(In input)
 template <typename Out>
 Out Utf<32>::encodeAnsi(std::uint32_t codepoint, Out output, char replacement, [[maybe_unused]] const std::locale& locale)
 {
-    // On Windows, gcc's standard library (glibc++) has almost
-    // no support for Unicode stuff. As a consequence, in this
-    // context we can only use the default locale and ignore
-    // the one passed as parameter.
-
-#if defined(SFML_SYSTEM_WINDOWS) &&                         /* if Windows ... */                          \
-    (defined(__GLIBCPP__) || defined(__GLIBCXX__)) &&       /* ... and standard library is glibc++ ... */ \
-    !(defined(__SGI_STL_PORT) || defined(_STLPORT_VERSION)) /* ... and STLPort is not used on top of it */
-
-    char character = 0;
-    if (wctomb(&character, static_cast<wchar_t>(codepoint)) >= 0)
-        *output++ = character;
-    else if (replacement)
-        *output++ = replacement;
-
-    return output;
-
-#else
-
     // Get the facet of the locale which deals with character conversion
     const auto& facet = std::use_facet<std::ctype<wchar_t>>(locale);
 
@@ -726,8 +690,6 @@ Out Utf<32>::encodeAnsi(std::uint32_t codepoint, Out output, char replacement, [
     *output++ = facet.narrow(static_cast<wchar_t>(codepoint), replacement);
 
     return output;
-
-#endif
 }