diff --git a/src/plugins/baremetal/debugserverprovidermanager.cpp b/src/plugins/baremetal/debugserverprovidermanager.cpp
index 7716c200c07..e7afc2ef10d 100644
--- a/src/plugins/baremetal/debugserverprovidermanager.cpp
+++ b/src/plugins/baremetal/debugserverprovidermanager.cpp
@@ -99,7 +99,7 @@ void DebugServerProviderManager::restoreProviders()
         for (const Key &key : keys) {
             const int lastDot = key.view().lastIndexOf('.');
             if (lastDot != -1)
-                map[key.view().mid(lastDot + 1).toByteArray()] = map[key];
+                map[key.toByteArray().mid(lastDot + 1)] = map[key];
         }
         bool restored = false;
         for (IDebugServerProviderFactory *f : std::as_const(m_factories)) {
diff --git a/src/plugins/debugger/debuggeractions.cpp b/src/plugins/debugger/debuggeractions.cpp
index 36c25631002..5c313d1be53 100644
--- a/src/plugins/debugger/debuggeractions.cpp
+++ b/src/plugins/debugger/debuggeractions.cpp
@@ -292,7 +292,7 @@ QString DebuggerSettings::dump()
         if (!key.isEmpty()) {
             const int pos = key.view().indexOf('/');
             if (pos >= 0)
-                key = key.view().mid(pos).toByteArray();
+                key = key.toByteArray().mid(pos);
             const QString current = aspect->variantValue().toString();
             const QString default_ = aspect->defaultVariantValue().toString();
             QString setting = stringFromKey(key) + ": " + current + "  (default: " + default_ + ')';
diff --git a/src/plugins/qtsupport/qtversionmanager.cpp b/src/plugins/qtsupport/qtversionmanager.cpp
index 941bd763b69..3a4209cee83 100644
--- a/src/plugins/qtsupport/qtversionmanager.cpp
+++ b/src/plugins/qtsupport/qtversionmanager.cpp
@@ -219,7 +219,7 @@ bool QtVersionManagerImpl::restoreQtVersions()
         if (!key.view().startsWith(keyPrefix))
             continue;
         bool ok;
-        int count = key.view().mid(keyPrefix.count()).toInt(&ok);
+        int count = key.toByteArray().mid(keyPrefix.count()).toInt(&ok);
         if (!ok || count < 0)
             continue;
 
@@ -293,7 +293,7 @@ void QtVersionManagerImpl::updateFromInstaller(bool emitSignal)
         if (!key.view().startsWith(keyPrefix))
             continue;
         bool ok;
-        int count = key.view().mid(keyPrefix.count()).toInt(&ok);
+        int count = key.toByteArray().mid(keyPrefix.count()).toInt(&ok);
         if (!ok || count < 0)
             continue;