diff --git a/src/plugins/cpptools/cppcodemodelsettings.cpp b/src/plugins/cpptools/cppcodemodelsettings.cpp
index 78690cc3b91..2f8d0b3d42c 100644
--- a/src/plugins/cpptools/cppcodemodelsettings.cpp
+++ b/src/plugins/cpptools/cppcodemodelsettings.cpp
@@ -90,7 +90,7 @@ static QString convertToNewClazyChecksFormat(const QString &checks)
 
     if (checks.size() == 6 && checks.startsWith("level")) {
         bool ok = false;
-        const int level = checks.mid(5).toInt(&ok);
+        const int level = checks.midRef(5).toInt(&ok);
         QTC_ASSERT(ok, return QString());
         return clazyChecksForLevel(level);
     }
diff --git a/src/plugins/cpptools/cppprojectfilecategorizer.cpp b/src/plugins/cpptools/cppprojectfilecategorizer.cpp
index ddb841f9de6..35ec2d9263e 100644
--- a/src/plugins/cpptools/cppprojectfilecategorizer.cpp
+++ b/src/plugins/cpptools/cppprojectfilecategorizer.cpp
@@ -47,7 +47,7 @@ ProjectFileCategorizer::ProjectFileCategorizer(const QString &projectPartName,
 QString ProjectFileCategorizer::partName(const QString &languageName) const
 {
     if (hasMultipleParts())
-        return QString::fromLatin1("%1 (%2)").arg(m_partName).arg(languageName);
+        return QString::fromLatin1("%1 (%2)").arg(m_partName, languageName);
 
     return m_partName;
 }
diff --git a/src/plugins/cpptools/symbolsfindfilter.cpp b/src/plugins/cpptools/symbolsfindfilter.cpp
index 1fd758a3fa4..f6bc1f52ba4 100644
--- a/src/plugins/cpptools/symbolsfindfilter.cpp
+++ b/src/plugins/cpptools/symbolsfindfilter.cpp
@@ -248,9 +248,9 @@ QString SymbolsFindFilter::toolTip(FindFlags findFlags) const
     if (m_symbolsToSearch & SymbolSearcher::Declarations)
         types.append(tr("Declarations"));
     return tr("Scope: %1\nTypes: %2\nFlags: %3")
-            .arg(searchScope() == SymbolSearcher::SearchGlobal ? tr("All") : tr("Projects"))
-            .arg(types.join(tr(", ")))
-            .arg(IFindFilter::descriptionForFindFlags(findFlags));
+        .arg(searchScope() == SymbolSearcher::SearchGlobal ? tr("All") : tr("Projects"),
+             types.join(", "),
+             IFindFilter::descriptionForFindFlags(findFlags));
 }
 
 // #pragma mark -- SymbolsFindFilterConfigWidget