diff --git a/core/src/main/java/io/snabble/sdk/Project.kt b/core/src/main/java/io/snabble/sdk/Project.kt
index 328231b2d9..40a08fa63a 100644
--- a/core/src/main/java/io/snabble/sdk/Project.kt
+++ b/core/src/main/java/io/snabble/sdk/Project.kt
@@ -4,7 +4,6 @@ import com.google.gson.Gson
 import com.google.gson.JsonElement
 import com.google.gson.JsonObject
 import com.google.gson.JsonSyntaxException
-import com.google.gson.annotations.SerializedName
 import com.google.gson.reflect.TypeToken
 import io.snabble.sdk.auth.SnabbleAuthorizationInterceptor
 import io.snabble.sdk.checkout.Checkout
@@ -351,6 +350,10 @@ class Project internal constructor(
         private set
 
     var appTheme: AppTheme? = null
+        private set
+
+    var customizationConfig: JsonElement? = null
+        private set
 
     init {
         parse(jsonObject)
@@ -368,7 +371,7 @@ class Project internal constructor(
             brand = Snabble.brands[brandId]
         }
 
-        val customizationConfig: JsonElement? = jsonObject["appCustomizationConfig"]
+        customizationConfig = jsonObject["appCustomizationConfig"]
         try {
             val lightModeColors: LightModeColors? = gson.fromJson(customizationConfig, LightModeColors::class.java)
             val darkModeColors: DarkModeColors? = gson.fromJson(customizationConfig, DarkModeColors::class.java)
diff --git a/ui-toolkit/src/main/kotlin/io/snabble/sdk/widgets/snabble/purchase/repository/PurchasesRepository.kt b/ui-toolkit/src/main/kotlin/io/snabble/sdk/widgets/snabble/purchase/repository/PurchasesRepository.kt
index f461b827bf..a0418e2717 100644
--- a/ui-toolkit/src/main/kotlin/io/snabble/sdk/widgets/snabble/purchase/repository/PurchasesRepository.kt
+++ b/ui-toolkit/src/main/kotlin/io/snabble/sdk/widgets/snabble/purchase/repository/PurchasesRepository.kt
@@ -42,10 +42,11 @@ internal class PurchasesRepositoryImpl(
     }
 
     private fun Array<ReceiptInfo>.mapToPurchases(count: Int): List<Purchase> {
-        val purchases = filter { it.pdfUrl != null }
-        if (purchases.isEmpty()) return emptyList()
-        return purchases
-            .slice(0 until size.coerceAtMost(count))
-            .map { it.toPurchase(timeFormatter) }
+        val receipts = filter { it.pdfUrl != null }
+        return when {
+            receipts.isEmpty() -> emptyList()
+            else -> receipts.slice(0 until size.coerceAtMost(count))
+                .map { it.toPurchase(timeFormatter) }
+        }
     }
 }
diff --git a/ui/src/main/java/io/snabble/sdk/ui/checkout/CheckoutCustomerCardView.java b/ui/src/main/java/io/snabble/sdk/ui/checkout/CheckoutCustomerCardView.java
index 026cd2c450..2164431250 100644
--- a/ui/src/main/java/io/snabble/sdk/ui/checkout/CheckoutCustomerCardView.java
+++ b/ui/src/main/java/io/snabble/sdk/ui/checkout/CheckoutCustomerCardView.java
@@ -117,4 +117,4 @@ public void setHelperImage(Bitmap bitmap) {
             helperText.setVisibility(View.VISIBLE);
         }
     }
-}
\ No newline at end of file
+}