diff --git a/internal/service/dashboard.go b/internal/service/dashboard.go
index f5eb770..51e53d6 100644
--- a/internal/service/dashboard.go
+++ b/internal/service/dashboard.go
@@ -41,6 +41,7 @@ func (s Dashboard) Summary(ctx context.Context, user *types.User, month time.Tim
 		WHERE user_id = $1 
 			AND value > 0
 			AND account_id IS NOT NULL
+			AND treasure_chest_id IS NULL
 			AND error IS NULL
 			AND date_trunc('month', date) = date_trund('month', $2)`,
 		user.Id, month)
@@ -51,6 +52,7 @@ func (s Dashboard) Summary(ctx context.Context, user *types.User, month time.Tim
 		WHERE user_id = $1 
 			AND value > 0
 			AND treasure_chest_id IS NOT NULL
+			AND account_id IS NULL
 			AND error IS NULL
 			AND date_trunc('month', date) = date_trund('month', $2)`,
 		user.Id, month)
diff --git a/internal/service/transaction.go b/internal/service/transaction.go
index d47d9da..22ce975 100644
--- a/internal/service/transaction.go
+++ b/internal/service/transaction.go
@@ -512,27 +512,31 @@ func (s TransactionImpl) validateAndEnrichTransaction(ctx context.Context, tx *s
 	return &transaction, nil
 }
 
-func (s TransactionImpl) updateErrors(transaction *types.Transaction) {
+// There are the following constallations and their explanation:
+//
+//	Account	|	TreasureChest	|	Value	|	Description
+//	Y		|	Y				| +			| Invalid
+//	Y		|	Y				| -			|	Bought a good
+//	Y		|	N				| +			| Income
+//	Y		|	N				| -			| For moving money between accounts
+//	N		|	Y				| +			| Saving
+//	N		|	Y				| -			| For moving money between treasure chests
+//	N		|	N				| +			| Invalid
+//	N		|	N				| -			| Invalid
+func (s TransactionImpl) updateErrors(t *types.Transaction) {
 	errorStr := ""
 
 	switch {
-	case transaction.Value < 0:
-		if transaction.TreasureChestId == nil {
-			errorStr = "no treasure chest specified"
-		}
-	case transaction.Value > 0:
-		if transaction.AccountId == nil && transaction.TreasureChestId == nil {
-			errorStr = "either an account or a treasure chest needs to be specified"
-		} else if transaction.AccountId != nil && transaction.TreasureChestId != nil {
-			errorStr = "positive amounts can only be applied to either an account or a treasure chest"
-		}
-	default:
+	case (t.AccountId != nil && t.TreasureChestId != nil && t.Value > 0) ||
+		(t.AccountId == nil && t.TreasureChestId == nil):
+		errorStr = "either an account or a treasure chest needs to be specified"
+	case t.Value == 0:
 		errorStr = "\"value\" needs to be specified"
 	}
 
 	if errorStr == "" {
-		transaction.Error = nil
+		t.Error = nil
 	} else {
-		transaction.Error = &errorStr
+		t.Error = &errorStr
 	}
 }