diff --git a/signalrkore/build.gradle.kts b/signalrkore/build.gradle.kts
index 9067db4..76ec733 100644
--- a/signalrkore/build.gradle.kts
+++ b/signalrkore/build.gradle.kts
@@ -30,6 +30,7 @@ kotlin {
 
     if (OperatingSystem.current().isMacOsX) {
         listOf(
+            iosX64(),
             iosArm64(),
             iosSimulatorArm64()
         ).forEach { iosTarget ->
diff --git a/signalrkore/src/commonMain/kotlin/eu/lepicekmichal/signalrkore/HttpHubConnectionBuilder.kt b/signalrkore/src/commonMain/kotlin/eu/lepicekmichal/signalrkore/HttpHubConnectionBuilder.kt
index 2a26266..9051b41 100644
--- a/signalrkore/src/commonMain/kotlin/eu/lepicekmichal/signalrkore/HttpHubConnectionBuilder.kt
+++ b/signalrkore/src/commonMain/kotlin/eu/lepicekmichal/signalrkore/HttpHubConnectionBuilder.kt
@@ -73,6 +73,7 @@ class HttpHubConnectionBuilder(private val url: String) {
         handshakeResponseTimeout,
         headers.toMap(),
         transportEnum,
+        null,
         json,
         logger,
     )
diff --git a/signalrkore/src/commonMain/kotlin/eu/lepicekmichal/signalrkore/HubConnection.kt b/signalrkore/src/commonMain/kotlin/eu/lepicekmichal/signalrkore/HubConnection.kt
index 10b6645..97171ff 100644
--- a/signalrkore/src/commonMain/kotlin/eu/lepicekmichal/signalrkore/HubConnection.kt
+++ b/signalrkore/src/commonMain/kotlin/eu/lepicekmichal/signalrkore/HubConnection.kt
@@ -18,6 +18,7 @@ import io.ktor.utils.io.core.*
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.IO
 import kotlinx.coroutines.SupervisorJob
 import kotlinx.coroutines.cancelChildren
 import kotlinx.coroutines.delay
@@ -125,7 +126,7 @@ class HubConnection private constructor(
         }
 
         if (skipNegotiate && transportEnum != TransportEnum.WebSockets)
-            throw RuntimeException("Negotiation can only be skipped when using the WebSocket transport")
+            throw RuntimeException("Negotiation can only be skipped when using a WebSocket transport")
 
         val (negotiationTransport, negotiationUrl) = if (!skipNegotiate) {
             try {
diff --git a/signalrkore/src/commonMain/kotlin/eu/lepicekmichal/signalrkore/transports/LongPollingTransport.kt b/signalrkore/src/commonMain/kotlin/eu/lepicekmichal/signalrkore/transports/LongPollingTransport.kt
index b337b7e..50bd884 100644
--- a/signalrkore/src/commonMain/kotlin/eu/lepicekmichal/signalrkore/transports/LongPollingTransport.kt
+++ b/signalrkore/src/commonMain/kotlin/eu/lepicekmichal/signalrkore/transports/LongPollingTransport.kt
@@ -13,6 +13,7 @@ import io.ktor.http.HttpStatusCode
 import io.ktor.http.contentLength
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.IO
 import kotlinx.coroutines.SupervisorJob
 import kotlinx.coroutines.cancel
 import kotlinx.coroutines.flow.Flow
@@ -21,6 +22,7 @@ import kotlinx.coroutines.flow.asSharedFlow
 import kotlinx.coroutines.isActive
 import kotlinx.coroutines.launch
 import kotlinx.datetime.Clock
+import kotlin.jvm.Volatile
 
 internal class LongPollingTransport(private val headers: Map<String, String>, private val client: HttpClient) : Transport {