diff --git a/project/build.properties b/project/build.properties
index 6db9842..0837f7a 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.4.0
+sbt.version=1.3.13
diff --git a/scala/src/main/scala/ru/org/codingteam/loglist/dto/QuoteDTO.scala b/scala/src/main/scala/ru/org/codingteam/loglist/dto/QuoteDTO.scala
index ce16c63..20cf9e0 100644
--- a/scala/src/main/scala/ru/org/codingteam/loglist/dto/QuoteDTO.scala
+++ b/scala/src/main/scala/ru/org/codingteam/loglist/dto/QuoteDTO.scala
@@ -1,3 +1,3 @@
 package ru.org.codingteam.loglist.dto
 
-case class QuoteDTO(id: Long, source: String, sourceUrl: String, time: Long, content: String, rating: Int)
+case class QuoteDTO(id: Long, source: String, sourceUrl: Option[String], time: Long, content: String, rating: Int)
diff --git a/scalajvm/app/controllers/api/Quotes.scala b/scalajvm/app/controllers/api/Quotes.scala
index 36a4921..045e16d 100644
--- a/scalajvm/app/controllers/api/Quotes.scala
+++ b/scalajvm/app/controllers/api/Quotes.scala
@@ -50,7 +50,7 @@ class Quotes @Inject()(implicit cc: ControllerComponents, configuration: Configu
     }
 
   private def buildQuoteDto(quote: Quote): QuoteDTO =
-    QuoteDTO(quote.id, quote.source, quote.sourceUrl.orNull, quote.time.toInstant.toEpochMilli, quote.content.getOrElse(""), quote.rating)
+    QuoteDTO(quote.id, quote.source, quote.sourceUrl, quote.time.toInstant.toEpochMilli, quote.content.getOrElse(""), quote.rating)
 
   private def json(text: String) = Ok(text).as("application/json; charset=utf-8")
 }