diff --git a/cockatrice/src/game/cards/card_database.cpp b/cockatrice/src/game/cards/card_database.cpp
index 00fa4824d..39bc7a499 100644
--- a/cockatrice/src/game/cards/card_database.cpp
+++ b/cockatrice/src/game/cards/card_database.cpp
@@ -375,8 +375,8 @@ CardDatabase::CardDatabase(QObject *parent) : QObject(parent), loadStatus(NotLoa
     availableParsers << new CockatriceXml3Parser;
 
     for (auto &parser : availableParsers) {
-        connect(parser, SIGNAL(addCard(CardInfoPtr)), this, SLOT(addCard(CardInfoPtr)), Qt::DirectConnection);
-        connect(parser, SIGNAL(addSet(CardSetPtr)), this, SLOT(addSet(CardSetPtr)), Qt::DirectConnection);
+        connect(parser, &ICardDatabaseParser::addCard, this, &CardDatabase::addCard, Qt::DirectConnection);
+        connect(parser, &ICardDatabaseParser::addSet, this, &CardDatabase::addSet, Qt::DirectConnection);
     }
 
     connect(&SettingsCache::instance(), SIGNAL(cardDatabasePathChanged()), this, SLOT(loadCardDatabases()));
diff --git a/cockatrice/src/game/cards/card_database_parser/card_database_parser.h b/cockatrice/src/game/cards/card_database_parser/card_database_parser.h
index 87e8eec5e..12da8efbb 100644
--- a/cockatrice/src/game/cards/card_database_parser/card_database_parser.h
+++ b/cockatrice/src/game/cards/card_database_parser/card_database_parser.h
@@ -10,6 +10,7 @@
 
 class ICardDatabaseParser : public QObject
 {
+    Q_OBJECT
 public:
     ~ICardDatabaseParser() override = default;
 
@@ -35,8 +36,8 @@ protected:
                               const QDate &releaseDate = QDate(),
                               const CardSet::Priority priority = CardSet::PriorityFallback);
 signals:
-    virtual void addCard(CardInfoPtr card) = 0;
-    virtual void addSet(CardSetPtr set) = 0;
+    void addCard(CardInfoPtr card);
+    void addSet(CardSetPtr set);
 };
 
 Q_DECLARE_INTERFACE(ICardDatabaseParser, "ICardDatabaseParser")
diff --git a/cockatrice/src/game/cards/card_database_parser/cockatrice_xml_3.h b/cockatrice/src/game/cards/card_database_parser/cockatrice_xml_3.h
index 2006d2203..9e7726e35 100644
--- a/cockatrice/src/game/cards/card_database_parser/cockatrice_xml_3.h
+++ b/cockatrice/src/game/cards/card_database_parser/cockatrice_xml_3.h
@@ -24,9 +24,6 @@ private:
     void loadCardsFromXml(QXmlStreamReader &xml);
     void loadSetsFromXml(QXmlStreamReader &xml);
     QString getMainCardType(QString &type);
-signals:
-    void addCard(CardInfoPtr card) override;
-    void addSet(CardSetPtr set) override;
 };
 
 #endif
\ No newline at end of file
diff --git a/cockatrice/src/game/cards/card_database_parser/cockatrice_xml_4.h b/cockatrice/src/game/cards/card_database_parser/cockatrice_xml_4.h
index 59de582a3..82f71324a 100644
--- a/cockatrice/src/game/cards/card_database_parser/cockatrice_xml_4.h
+++ b/cockatrice/src/game/cards/card_database_parser/cockatrice_xml_4.h
@@ -24,9 +24,6 @@ private:
     QVariantHash loadCardPropertiesFromXml(QXmlStreamReader &xml);
     void loadCardsFromXml(QXmlStreamReader &xml);
     void loadSetsFromXml(QXmlStreamReader &xml);
-signals:
-    void addCard(CardInfoPtr card) override;
-    void addSet(CardSetPtr set) override;
 };
 
 #endif
\ No newline at end of file