diff --git a/six/modules/c++/six.sicd/unittests/test_valid_six.cpp b/six/modules/c++/six.sicd/unittests/test_valid_six.cpp
index 59f1d8c55..2d26049b2 100644
--- a/six/modules/c++/six.sicd/unittests/test_valid_six.cpp
+++ b/six/modules/c++/six.sicd/unittests/test_valid_six.cpp
@@ -191,10 +191,8 @@ TEST_CASE(valid_six_50x50)
     valid_six_50x50_(&schemaPaths); // validate against schema
 }
 
-const std::string classificationText_iso8859_1_("NON CLASSIFI\xc9 / UNCLASSIFIED");  // ISO8859-1 "NON CLASSIFI� / UNCLASSIFIED"
-const auto classificationText_iso8859_1 = str::EncodedStringView::fromWindows1252(classificationText_iso8859_1_).details_w1252string();
-const std::string classificationText_utf_8_("NON CLASSIFI\xc3\x89 / UNCLASSIFIED");  // UTF-8 "NON CLASSIFI� / UNCLASSIFIED"
-const auto classificationText_utf_8 = str::EncodedStringView::fromUtf8(classificationText_utf_8_).u8string();
+const std::string classificationText_iso8859_1("NON CLASSIFI\xc9 / UNCLASSIFIED");  // ISO8859-1 "NON CLASSIFI� / UNCLASSIFIED"
+const std::string classificationText_utf_8("NON CLASSIFI\xc3\x89 / UNCLASSIFIED");  // UTF-8 "NON CLASSIFI� / UNCLASSIFIED"
 
 TEST_CASE(sicd_French_xml)
 {
@@ -207,7 +205,7 @@ TEST_CASE(sicd_French_xml)
     const auto image = six::sicd::readFromNITF(inputPathname, pComplexData); // no validation
     const six::Data* pData = pComplexData.get();
 
-    const auto expectedCassificationText = sys::Platform == sys::PlatformType::Linux ? classificationText_utf_8_ : classificationText_iso8859_1_;
+    const auto expectedCassificationText = sys::Platform == sys::PlatformType::Linux ? classificationText_utf_8 : classificationText_iso8859_1;
     const auto& classification = pData->getClassification();
     const auto actual = classification.getLevel();
     TEST_ASSERT_EQ(actual, expectedCassificationText);
@@ -262,12 +260,12 @@ static void sicd_French_xml_raw_(bool storeEncoding)
     size_t expectedLength;
     if (storeEncoding)
     {
-        expectedCharData = sys::Platform == sys::PlatformType::Linux ? classificationText_utf_8_ : classificationText_iso8859_1_;
+        expectedCharData = sys::Platform == sys::PlatformType::Linux ? classificationText_utf_8 : classificationText_iso8859_1;
         expectedLength = expectedCharData.length();
     }
     else
     {
-        expectedCharData = sys::Platform == sys::PlatformType::Linux ? std::string() : classificationText_iso8859_1_;
+        expectedCharData = sys::Platform == sys::PlatformType::Linux ? std::string() : classificationText_iso8859_1;
         expectedLength = sys::Platform == sys::PlatformType::Linux ? 28 : classificationText_iso8859_1.length();
     }
     const auto characterData = classificationXML.getCharacterData();
@@ -284,11 +282,11 @@ static void sicd_French_xml_raw_(bool storeEncoding)
     std::u8string u8_expectedCharData8;
     if (storeEncoding)
     {
-        u8_expectedCharData8 = classificationText_utf_8;
+        u8_expectedCharData8 = str::fromUtf8(classificationText_utf_8.c_str(), classificationText_utf_8.length());
     }
     else
     {
-        u8_expectedCharData8 = sys::Platform == sys::PlatformType::Linux ? std::u8string() : classificationText_utf_8;
+        u8_expectedCharData8 = sys::Platform == sys::PlatformType::Linux ? std::u8string() : str::fromUtf8(classificationText_utf_8.c_str(), classificationText_utf_8.length());
     }
     expectedLength = u8_expectedCharData8.length();