diff --git a/src/keyboard_layout_switching.cpp b/src/keyboard_layout_switching.cpp
index 2a71192399..b0b509ed7d 100644
--- a/src/keyboard_layout_switching.cpp
+++ b/src/keyboard_layout_switching.cpp
@@ -282,7 +282,7 @@ ApplicationPolicy::ApplicationPolicy(KWin::Xkb* xkb, KWin::KeyboardLayout* layou
                 const QStringList keyList = m_config.keyList().filter(keyPrefix);
                 for (const QString& key : keyList) {
                     m_layoutsRestored.insert(
-                                key.midRef(keyPrefix.size()).toLatin1(),
+                                QStringView(key).mid(keyPrefix.size()).toLatin1(),
                                 m_config.readEntry(key, 0));
                 }
             }
diff --git a/src/libkwineffects/kwinglplatform.cpp b/src/libkwineffects/kwinglplatform.cpp
index 01a4c962c4..858d7b1d40 100644
--- a/src/libkwineffects/kwinglplatform.cpp
+++ b/src/libkwineffects/kwinglplatform.cpp
@@ -225,7 +225,7 @@ static ChipClass detectRadeonClass(const QByteArray &chipset)
     const QString chipset16 = QString::fromLatin1(chipset);
     QString name = extract(chipset16, QStringLiteral("HD [0-9]{4}")); // HD followed by a space and 4 digits
     if (!name.isEmpty()) {
-        const int id = name.rightRef(4).toInt();
+        const int id = QStringView(name).right(4).toInt();
         if (id == 6250 || id == 6310)   // Palm
             return Evergreen;
 
@@ -246,7 +246,7 @@ static ChipClass detectRadeonClass(const QByteArray &chipset)
 
     name = extract(chipset16, QStringLiteral("X[0-9]{3,4}")); // X followed by 3-4 digits
     if (!name.isEmpty()) {
-        const int id = name.midRef(1, -1).toInt();
+        const int id = QStringView(name).mid(1, -1).toInt();
 
         // X1xxx
         if (id >= 1300)
@@ -290,7 +290,7 @@ static ChipClass detectNVidiaClass(const QString &chipset)
 {
     QString name = extract(chipset, QStringLiteral("\\bNV[0-9,A-F]{2}\\b")); // NV followed by two hexadecimal digits
     if (!name.isEmpty()) {
-        const int id = chipset.midRef(2, -1).toInt(nullptr, 16); // Strip the 'NV' from the id
+        const int id = QStringView(chipset).mid(2, -1).toInt(nullptr, 16); // Strip the 'NV' from the id
 
         switch(id & 0xf0) {
         case 0x00:
@@ -341,7 +341,7 @@ static ChipClass detectNVidiaClass(const QString &chipset)
         if (!name[name.length() - 1].isDigit())
             name.chop(1);
 
-        const int id = name.rightRef(4).toInt();
+        const int id = QStringView(name).right(4).toInt();
         if (id < 6000)
             return NV30;
 
@@ -360,7 +360,7 @@ static ChipClass detectNVidiaClass(const QString &chipset)
         if (!name[name.length() - 1].isDigit())
             name.chop(1);
 
-        const int id = name.rightRef(3).toInt();
+        const int id = QStringView(name).right(3).toInt();
         if (id >= 100 && id < 600) {
             if (id >= 400)
                 return GF100;