diff --git a/server/app/com/xsn/explorer/services/BalanceService.scala b/server/app/com/xsn/explorer/services/BalanceService.scala
index c5792ab..33177eb 100644
--- a/server/app/com/xsn/explorer/services/BalanceService.scala
+++ b/server/app/com/xsn/explorer/services/BalanceService.scala
@@ -6,19 +6,19 @@ import com.alexitc.playsonify.models.ordering.OrderingQuery
 import com.alexitc.playsonify.models.pagination.{Limit, Offset, PaginatedQuery}
 import com.alexitc.playsonify.validators.PaginatedQueryValidator
 import com.xsn.explorer.data.async.BalanceFutureDataHandler
-import com.xsn.explorer.errors.AddressFormatError
 import com.xsn.explorer.models.WrappedResult
 import com.xsn.explorer.models.persisted.Balance
-import com.xsn.explorer.models.values._
 import com.xsn.explorer.parsers.BalanceOrderingParser
+import com.xsn.explorer.services.validators.AddressValidator
 import javax.inject.Inject
-import org.scalactic.{Good, One, Or}
+import org.scalactic.Good
 
 import scala.concurrent.ExecutionContext
 
 class BalanceService @Inject() (
     paginatedQueryValidator: PaginatedQueryValidator,
     balanceOrderingParser: BalanceOrderingParser,
+    addressValidator: AddressValidator,
     balanceFutureDataHandler: BalanceFutureDataHandler)(
     implicit ec: ExecutionContext) {
 
@@ -36,13 +36,10 @@ class BalanceService @Inject() (
     val result = for {
       _ <- paginatedQueryValidator.validate(PaginatedQuery(Offset(0), limit), 100).toFutureOr
 
-      lastSeenAddress <- {
-        lastSeenAddressString
-            .map(Address.from)
-            .map { txid => Or.from(txid, One(AddressFormatError)).map(Option.apply) }
-            .getOrElse(Good(Option.empty))
-            .toFutureOr
-      }
+      lastSeenAddress <- lastSeenAddressString
+          .map { string => addressValidator.validate(string).map(Option.apply) }
+          .getOrElse(Good(None))
+          .toFutureOr
 
       data <- balanceFutureDataHandler.getHighestBalances(limit, lastSeenAddress).toFutureOr
     } yield WrappedResult(data)