diff --git a/libcockatrice_settings/libcockatrice/settings/game_filters_settings.cpp b/libcockatrice_settings/libcockatrice/settings/game_filters_settings.cpp
index a57dc50cd..4f5bf52ee 100644
--- a/libcockatrice_settings/libcockatrice/settings/game_filters_settings.cpp
+++ b/libcockatrice_settings/libcockatrice/settings/game_filters_settings.cpp
@@ -8,11 +8,11 @@ GameFiltersSettings::GameFiltersSettings(const QString &settingPath, QObject *pa
 {
 }
 
-/*
+/**
  * The game type might contain special characters, so to use it in
  * QSettings we just hash it.
  */
-QString GameFiltersSettings::hashGameType(const QString &gameType)
+static QString hashGameType(const QString &gameType)
 {
     return QCryptographicHash::hash(gameType.toUtf8(), QCryptographicHash::Md5).toHex();
 }
diff --git a/libcockatrice_settings/libcockatrice/settings/game_filters_settings.h b/libcockatrice_settings/libcockatrice/settings/game_filters_settings.h
index f7533a826..c0e60551a 100644
--- a/libcockatrice_settings/libcockatrice/settings/game_filters_settings.h
+++ b/libcockatrice_settings/libcockatrice/settings/game_filters_settings.h
@@ -56,8 +56,6 @@ public:
 private:
     explicit GameFiltersSettings(const QString &settingPath, QObject *parent = nullptr);
     GameFiltersSettings(const GameFiltersSettings & /*other*/);
-
-    [[nodiscard]] static QString hashGameType(const QString &gameType);
 };
 
 #endif // GAMEFILTERSSETTINGS_H