diff --git a/src/gui/platform/unix/qkdetheme.cpp b/src/gui/platform/unix/qkdetheme.cpp
index 7cb571fc3b6..07df7124430 100644
--- a/src/gui/platform/unix/qkdetheme.cpp
+++ b/src/gui/platform/unix/qkdetheme.cpp
@@ -544,6 +544,9 @@ QKdeTheme::QKdeTheme(const QStringList& kdeDirs, int kdeVersion)
     d_func()->refresh();
 }
 
+QKdeTheme::~QKdeTheme()
+    = default;
+
 QFont *QKdeThemePrivate::kdeFont(const QVariant &fontValue)
 {
     if (fontValue.isValid()) {
diff --git a/src/gui/platform/unix/qkdetheme_p.h b/src/gui/platform/unix/qkdetheme_p.h
index e3f71e1b647..006f557b4c1 100644
--- a/src/gui/platform/unix/qkdetheme_p.h
+++ b/src/gui/platform/unix/qkdetheme_p.h
@@ -29,7 +29,8 @@ class Q_GUI_EXPORT QKdeTheme : public QGenericUnixTheme
 {
     Q_DECLARE_PRIVATE(QKdeTheme)
 public:
-    QKdeTheme(const QStringList& kdeDirs, int kdeVersion);
+    explicit QKdeTheme(const QStringList& kdeDirs, int kdeVersion);
+    ~QKdeTheme() override;
 
     static QPlatformTheme *createKdeTheme();
     QVariant themeHint(ThemeHint hint) const override;