diff --git a/src/Database.cpp b/src/Database.cpp
index 153f848..d5bea4b 100644
--- a/src/Database.cpp
+++ b/src/Database.cpp
@@ -501,8 +501,16 @@ Player Database::DbToPlayer(DbPlayer player) {
 
 Database::DbPlayer Database::getDbPlayerById(int id) {
     auto player = db.get_all<DbPlayer>(where(c(&DbPlayer::PlayerID) == id));
-    if (player.size() < 1)
+    if (player.size() < 1) {
+        // garbage collection
+        db.remove_all<Inventory>(where(c(&Inventory::playerId) == id));
+        db.remove_all<Nano>(where(c(&Nano::playerId) == id));
+        db.remove_all<DbQuest>(where(c(&DbQuest::PlayerId) == id));
+        db.remove_all<Buddyship>(where(c(&Buddyship::PlayerAId) == id || c(&Buddyship::PlayerBId) == id));
+        db.remove_all<EmailData>(where(c(&EmailData::PlayerId) == id));
+        db.remove_all<EmailItem>(where(c(&EmailItem::PlayerId) == id));
         return DbPlayer{ -1 };
+    }
     return player.front();
 }