diff --git a/cockatrice/src/game/cards/card_database.cpp b/cockatrice/src/game/cards/card_database.cpp
index 57fd72017..fdd43fbf4 100644
--- a/cockatrice/src/game/cards/card_database.cpp
+++ b/cockatrice/src/game/cards/card_database.cpp
@@ -195,7 +195,11 @@ void CardDatabase::addSet(CardSetPtr set)
 
 SetList CardDatabase::getSetList() const
 {
-    return static_cast<SetList>(sets.values());
+    SetList result;
+    for (auto set : sets.values()) {
+        result << set;
+    }
+    return result;
 }
 
 LoadStatus CardDatabase::loadFromFile(const QString &fileName)