FAIL!  : KConfigTest::testEncoding() Compared values are not the same
   Actual   (lines.first())                    : "[UTF-8:\\xc3\\xb6l]\n"
   Expected (QByteArray("[UTF-8:\xc3\xb6l]\n")): "[UTF-8:\xC3\xB6l]\n"
   Loc: [/home/jenkins/workspace/Frameworks/kconfig/kf5-qt5 SUSEQt5.11/autotests/kconfigtest.cpp(463)]

diff --git a/src/core/kconfigini.cpp b/src/core/kconfigini.cpp
index 39e5936..b674973 100644
--- a/src/core/kconfigini.cpp
+++ b/src/core/kconfigini.cpp
@@ -673,7 +673,12 @@ QByteArray KConfigIniBackend::stringToPrintable(const QByteArray &aString, Strin
         switch (s[i]) {
         default:
             // The \n, \t, \r cases (all < 32) are handled below; we can ignore them here
-            if (((unsigned char)s[i]) < 32 || ((unsigned char)s[i]) >= 127) {
+            if (((unsigned char)s[i]) < 32) {
+                goto doEscape;
+            }
+            // GroupString and KeyString should be valid UTF-8, but ValueString
+            // can be a bytearray with non-UTF-8 bytes that should be escaped.
+            if (type == ValueString && ((unsigned char)s[i]) >= 127) {
                 goto doEscape;
             }
             *data++ = s[i];