diff --git a/async-http-client-backend/fs2/src/test/scala/sttp/client4/asynchttpclient/fs2/AsyncHttpClientFs2HttpTest.scala b/async-http-client-backend/fs2/src/test/scala/sttp/client4/asynchttpclient/fs2/AsyncHttpClientFs2HttpTest.scala
index 8063e36af4..b5a08a7147 100644
--- a/async-http-client-backend/fs2/src/test/scala/sttp/client4/asynchttpclient/fs2/AsyncHttpClientFs2HttpTest.scala
+++ b/async-http-client-backend/fs2/src/test/scala/sttp/client4/asynchttpclient/fs2/AsyncHttpClientFs2HttpTest.scala
@@ -8,7 +8,4 @@ import sttp.client4.impl.cats.{CatsTestBase, TestIODispatcher}
 class AsyncHttpClientFs2HttpTest extends AsyncHttpClientHttpTest[IO] with TestIODispatcher with CatsTestBase {
   override val backend: Backend[IO] =
     AsyncHttpClientFs2Backend[IO](dispatcher = dispatcher).unsafeRunSync()
-
-  // for some unknown reason this single test fails using the fs2 implementation
-  override def supportsConnectionRefusedTest = false
 }
diff --git a/core/src/test/scala/sttp/client4/testing/HttpTest.scala b/core/src/test/scala/sttp/client4/testing/HttpTest.scala
index 4e7665911a..520bf66fef 100644
--- a/core/src/test/scala/sttp/client4/testing/HttpTest.scala
+++ b/core/src/test/scala/sttp/client4/testing/HttpTest.scala
@@ -47,7 +47,6 @@ trait HttpTest[F[_]]
 
   protected def supportsRequestTimeout = true
   protected def supportsSttpExceptions = true
-  protected def supportsConnectionRefusedTest = true
   protected def supportsMultipart = true
   protected def supportsCustomMultipartContentType = true
   protected def supportsCustomMultipartEncoding = true
@@ -640,21 +639,19 @@ trait HttpTest[F[_]]
         }
       }
 
-      if (supportsConnectionRefusedTest) {
-        "connection exceptions - connection refused" in {
-          val req = basicRequest
-            .get(uri"http://localhost:7918")
-            .response(asString)
+      "connection exceptions - connection refused" in {
+        val req = basicRequest
+          .get(uri"http://localhost:7918")
+          .response(asString)
 
-          Future(req.send(backend)).flatMap(_.toFuture()).failed.map { e =>
-            info("Sending request failed", Some(e))
-            try e shouldBe a[SttpClientException.ConnectException]
-            catch {
-              case t: Throwable =>
-                info("Not a connect exception, printing stack trace")
-                e.printStackTrace()
-                throw t
-            }
+        Future(req.send(backend)).flatMap(_.toFuture()).failed.map { e =>
+          info("Sending request failed", Some(e))
+          try e shouldBe a[SttpClientException.ConnectException]
+          catch {
+            case t: Throwable =>
+              info("Not a connect exception, printing stack trace")
+              e.printStackTrace()
+              throw t
           }
         }
       }