diff --git a/core/src/test/scala/sttp/client4/testing/BackendStubTests.scala b/core/src/test/scala/sttp/client4/testing/BackendStubTests.scala
index e295a91e0..1a96ab569 100644
--- a/core/src/test/scala/sttp/client4/testing/BackendStubTests.scala
+++ b/core/src/test/scala/sttp/client4/testing/BackendStubTests.scala
@@ -387,30 +387,32 @@ class BackendStubTests extends AnyFlatSpec with Matchers with ScalaFutures {
     result shouldBe Success(Right(1: Byte))
   }
 
-  it should "run the web socket pipe, for a web socket stream request" in {
-    var capturedFrame: WebSocketFrame = null
-
-    val backend: WebSocketStreamBackend[Identity, TestStreams] =
-      WebSocketStreamBackendStub
-        .synchronous[TestStreams]
-        .whenAnyRequest
-        .thenRespondAdjust(
-          WebSocketStreamConsumer[Identity](TestStreams) { pipe =>
-            capturedFrame = pipe(WebSocketFrame.text("hello"))
-          },
-          if (TestPlatform.Current == TestPlatform.JS) StatusCode.Ok else StatusCode.SwitchingProtocols
-        )
-
-    // running for side-effects
-    val _ = basicRequest
-      .get(uri"http://example.org")
-      .response(asWebSocketStream(TestStreams) {
-        case WebSocketFrame.Text(p, _, _) => WebSocketFrame.text(s"echo: $p")
-        case f                            => f
-      })
-      .send(backend)
-
-    capturedFrame shouldBe WebSocketFrame.text("echo: hello")
+  if (TestPlatform.Current != TestPlatform.JS) {
+    it should "run the web socket pipe, for a web socket stream request" in {
+      var capturedFrame: WebSocketFrame = null
+
+      val backend: WebSocketStreamBackend[Identity, TestStreams] =
+        WebSocketStreamBackendStub
+          .synchronous[TestStreams]
+          .whenAnyRequest
+          .thenRespondAdjust(
+            WebSocketStreamConsumer[Identity](TestStreams) { pipe =>
+              capturedFrame = pipe(WebSocketFrame.text("hello"))
+            },
+            StatusCode.SwitchingProtocols
+          )
+
+      // running for side-effects
+      val _ = basicRequest
+        .get(uri"ws://example.org")
+        .response(asWebSocketStream(TestStreams) {
+          case WebSocketFrame.Text(p, _, _) => WebSocketFrame.text(s"echo: $p")
+          case f                            => f
+        })
+        .send(backend)
+
+      capturedFrame shouldBe WebSocketFrame.text("echo: hello")
+    }
   }
 
   it should "evaluate side effects on each request" in {