diff --git a/src/plugins/texteditor/fontsettings.cpp b/src/plugins/texteditor/fontsettings.cpp
index 845be96af42..5b3402e4b5a 100644
--- a/src/plugins/texteditor/fontsettings.cpp
+++ b/src/plugins/texteditor/fontsettings.cpp
@@ -219,7 +219,7 @@ void FontSettings::addMixinStyle(QTextCharFormat &textCharFormat,
     };
 }
 
-QTextCharFormat FontSettings::toTextCharFormat(const TextStyles textStyles) const
+QTextCharFormat FontSettings::toTextCharFormat(const TextStyles &textStyles) const
 {
     auto textCharFormatIterator = m_textCharFormatCache.find(textStyles);
     if (textCharFormatIterator != m_textCharFormatCache.end())
diff --git a/src/plugins/texteditor/fontsettings.h b/src/plugins/texteditor/fontsettings.h
index 4daddfdd631..68fb62d241a 100644
--- a/src/plugins/texteditor/fontsettings.h
+++ b/src/plugins/texteditor/fontsettings.h
@@ -67,7 +67,7 @@ public:
 
     QVector<QTextCharFormat> toTextCharFormats(const QVector<TextStyle> &categories) const;
     QTextCharFormat toTextCharFormat(TextStyle category) const;
-    QTextCharFormat toTextCharFormat(const TextStyles textStyles) const;
+    QTextCharFormat toTextCharFormat(const TextStyles &textStyles) const;
 
     QString family() const;
     void setFamily(const QString &family);