diff --git a/BankingPersistence/src/commonMain/kotlin/net/codinux/banking/persistence/SqliteBankingRepository.kt b/BankingPersistence/src/commonMain/kotlin/net/codinux/banking/persistence/SqliteBankingRepository.kt
index 1d8668b..3b60d58 100644
--- a/BankingPersistence/src/commonMain/kotlin/net/codinux/banking/persistence/SqliteBankingRepository.kt
+++ b/BankingPersistence/src/commonMain/kotlin/net/codinux/banking/persistence/SqliteBankingRepository.kt
@@ -351,7 +351,7 @@ open class SqliteBankingRepository : BankingRepository {
             holding.quantity, holding.currency,
 
             mapAmount(holding.totalBalance), mapAmount(holding.marketValue),
-            holding.performancePercentage,
+            holding.performancePercentage?.toDouble(),
             mapAmount(holding.totalCostPrice), mapAmount(holding.averageCostPrice),
 
             mapInstant(holding.pricingTime), mapDate(holding.buyingDate)