diff --git a/jvm/src/test/scala/fluence/crypto/SignatureSpec.scala b/jvm/src/test/scala/fluence/crypto/SignatureSpec.scala
index 7248996..7eabd50 100644
--- a/jvm/src/test/scala/fluence/crypto/SignatureSpec.scala
+++ b/jvm/src/test/scala/fluence/crypto/SignatureSpec.scala
@@ -22,12 +22,12 @@ import java.io.File
 import cats.data.EitherT
 import cats.instances.try_._
 import fluence.crypto.algorithm.{ CryptoErr, Ecdsa }
-import org.scalatest.{ BeforeAndAfterAll, Matchers, WordSpec }
+import org.scalatest.{ Matchers, WordSpec }
 import scodec.bits.ByteVector
 
 import scala.util.{ Random, Try }
 
-class SignatureSpec extends WordSpec with Matchers with BeforeAndAfterAll {
+class SignatureSpec extends WordSpec with Matchers {
 
   def rndBytes(size: Int) = Random.nextString(10).getBytes