diff --git a/test/tests/LanguagePackTest.cpp b/test/tests/LanguagePackTest.cpp
index 7598ac5210..5f19d2e309 100644
--- a/test/tests/LanguagePackTest.cpp
+++ b/test/tests/LanguagePackTest.cpp
@@ -20,7 +20,7 @@ class LanguagePackTest : public testing::Test
 {
 protected:
     static const utf8* LanguageEnGB;
-    static const unsigned char LanguageZhTW[];
+    static const utf8* LanguageZhTW;
 };
 
 TEST_F(LanguagePackTest, create_empty)
@@ -53,7 +53,7 @@ TEST_F(LanguagePackTest, language_pack_simple)
 
 TEST_F(LanguagePackTest, language_pack_multibyte)
 {
-    auto lang = LanguagePackFactory::FromText(0, reinterpret_cast<const utf8*>(LanguageZhTW));
+    auto lang = LanguagePackFactory::FromText(0, LanguageZhTW);
     ASSERT_EQ(lang->GetId(), 0);
     ASSERT_EQ(lang->GetCount(), 4u);
     ASSERT_STREQ(lang->GetString(2), u8"懸吊式雲霄飛車");
@@ -69,31 +69,7 @@ const utf8* LanguagePackTest::LanguageEnGB = "# STR_XXXX part is read and XXXX b
                                              "STR_0003    :Stand-up Roller Coaster\n";
 
 // This includes a few entries extracted from zh-TW localisation.
-// It has to be declared as `unsigned char`, or else the values overflow signed byte.
-const unsigned char LanguagePackTest::LanguageZhTW[] = {
-    0x53, 0x54, 0x52, 0x5f, 0x30, 0x30, 0x30, 0x30, 0x20, 0x20, 0x20, 0x20, 0x3a, 0xe8, 0x9e, 0xba, 0xe6, 0x97, 0x8b, 0xe5,
-    0xbc, 0x8f, 0xe9, 0x9b, 0xb2, 0xe9, 0x9c, 0x84, 0xe9, 0xa3, 0x9b, 0xe8, 0xbb, 0x8a, 0x0a, 0x53, 0x54, 0x52, 0x5f, 0x30,
-    0x30, 0x30, 0x31, 0x20, 0x20, 0x20, 0x20, 0x3a, 0xe7, 0xab, 0x99, 0xe7, 0xab, 0x8b, 0xe5, 0xbc, 0x8f, 0xe9, 0x9b, 0xb2,
-    0xe9, 0x9c, 0x84, 0xe9, 0xa3, 0x9b, 0xe8, 0xbb, 0x8a, 0x0a, 0x53, 0x54, 0x52, 0x5f, 0x30, 0x30, 0x30, 0x32, 0x20, 0x20,
-    0x20, 0x20, 0x3a, 0xe6, 0x87, 0xb8, 0xe5, 0x90, 0x8a, 0xe5, 0xbc, 0x8f, 0xe9, 0x9b, 0xb2, 0xe9, 0x9c, 0x84, 0xe9, 0xa3,
-    0x9b, 0xe8, 0xbb, 0x8a, 0x0a, 0x53, 0x54, 0x52, 0x5f, 0x30, 0x30, 0x30, 0x33, 0x20, 0x20, 0x20, 0x20, 0x3a, 0xe5, 0x8f,
-    0x8d, 0xe8, 0xbd, 0x89, 0xe5, 0xbc, 0x8f, 0xe9, 0x9b, 0xb2, 0xe9, 0x9c, 0x84, 0xe9, 0xa3, 0x9b, 0xe8, 0xbb, 0x8a, 0x0a,
-    0x3c, 0x46, 0x6f, 0x72, 0x65, 0x73, 0x74, 0x20, 0x46, 0x72, 0x6f, 0x6e, 0x74, 0x69, 0x65, 0x72, 0x73, 0x3e, 0x0a, 0x53,
-    0x54, 0x52, 0x5f, 0x53, 0x43, 0x4e, 0x52, 0x20, 0x20, 0x20, 0x20, 0x3a, 0x46, 0x6f, 0x72, 0x65, 0x73, 0x74, 0x20, 0x46,
-    0x72, 0x6f, 0x6e, 0x74, 0x69, 0x65, 0x72, 0x73, 0x0a, 0x53, 0x54, 0x52, 0x5f, 0x50, 0x41, 0x52, 0x4b, 0x20, 0x20, 0x20,
-    0x20, 0x3a, 0x46, 0x6f, 0x72, 0x65, 0x73, 0x74, 0x20, 0x46, 0x72, 0x6f, 0x6e, 0x74, 0x69, 0x65, 0x72, 0x73, 0x0a, 0x53,
-    0x54, 0x52, 0x5f, 0x44, 0x54, 0x4c, 0x53, 0x20, 0x20, 0x20, 0x20, 0x3a, 0xe5, 0x9c, 0xa8, 0xe9, 0x9a, 0xb1, 0xe8, 0x97,
-    0x8f, 0xe6, 0x96, 0xbc, 0xe6, 0xa3, 0xae, 0xe6, 0x9e, 0x97, 0xe6, 0xb7, 0xb1, 0xe8, 0x99, 0x95, 0xe7, 0x9a, 0x84, 0xe6,
-    0xb8, 0x85, 0xe7, 0xa9, 0xba, 0xe7, 0xaf, 0x84, 0xe5, 0x9c, 0x8d, 0xe4, 0xb8, 0xad, 0x2c, 0x20, 0xe5, 0xbb, 0xba, 0xe9,
-    0x80, 0xa0, 0xe4, 0xb8, 0x80, 0xe5, 0x80, 0x8b, 0xe5, 0xbe, 0x88, 0xe5, 0x8f, 0x97, 0xe6, 0xad, 0xa1, 0xe8, 0xbf, 0x8e,
-    0xe7, 0x9a, 0x84, 0xe6, 0xa8, 0x82, 0xe5, 0x9c, 0x92, 0x0a, 0x5b, 0x43, 0x4f, 0x4e, 0x44, 0x4f, 0x52, 0x52, 0x44, 0x5d,
-    0x0a, 0x53, 0x54, 0x52, 0x5f, 0x4e, 0x41, 0x4d, 0x45, 0x20, 0x20, 0x20, 0x20, 0x3a, 0xe7, 0xa5, 0x9e, 0xe9, 0xb7, 0xb9,
-    0xe6, 0x9a, 0xa2, 0xe9, 0x81, 0x8a, 0x0a, 0x53, 0x54, 0x52, 0x5f, 0x44, 0x45, 0x53, 0x43, 0x20, 0x20, 0x20, 0x20, 0x3a,
-    0xe4, 0xb9, 0x98, 0xe5, 0xae, 0xa2, 0xe4, 0xb9, 0x98, 0xe5, 0x9d, 0x90, 0xe6, 0x96, 0xbc, 0xe8, 0xbb, 0x8c, 0xe9, 0x81,
-    0x93, 0xe4, 0xb8, 0x8b, 0xe7, 0x9a, 0x84, 0xe7, 0xa5, 0x9e, 0xe9, 0xb7, 0xb9, 0xe9, 0x80, 0xa0, 0xe5, 0x9e, 0x8b, 0xe5,
-    0x88, 0x97, 0xe8, 0xbb, 0x8a, 0xe4, 0xb8, 0x8a, 0x2c, 0x20, 0xe5, 0xb0, 0x87, 0xe6, 0x9c, 0x83, 0xe6, 0x96, 0xbc, 0xe9,
-    0xa3, 0x9b, 0xe9, 0xa6, 0xb3, 0xe4, 0xb8, 0xad, 0xe9, 0xab, 0x94, 0xe9, 0xa9, 0x97, 0xe9, 0xa3, 0x9b, 0xe4, 0xb8, 0x80,
-    0xe8, 0x88, 0xac, 0xe7, 0x9a, 0x84, 0xe5, 0xbf, 0xab, 0xe6, 0x84, 0x9f, 0x0a, 0x53, 0x54, 0x52, 0x5f, 0x43, 0x50, 0x54,
-    0x59, 0x20, 0x20, 0x20, 0x20, 0x3a, 0xe6, 0xaf, 0x8f, 0xe8, 0xbb, 0x8a, 0xe5, 0x8d, 0xa1, 0x34, 0xe4, 0xbd, 0x8d, 0xe4,
-    0xb9, 0x98, 0xe5, 0xae, 0xa2, 0x0a, 0x00,
-};
+const utf8* LanguagePackTest::LanguageZhTW = u8"STR_0000    :螺旋式雲霄飛車\n"
+                                             u8"STR_0001    :站立式雲霄飛車\n"
+                                             u8"STR_0002    :懸吊式雲霄飛車\n"
+                                             u8"STR_0003    :反轉式雲霄飛車\n";