diff --git a/app/src/main/java/org/thoughtcrime/securesms/loki/activities/JoinPublicChatActivity.kt b/app/src/main/java/org/thoughtcrime/securesms/loki/activities/JoinPublicChatActivity.kt
index b32599d95..6686ca834 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/loki/activities/JoinPublicChatActivity.kt
+++ b/app/src/main/java/org/thoughtcrime/securesms/loki/activities/JoinPublicChatActivity.kt
@@ -95,7 +95,12 @@ class JoinPublicChatActivity : PassphraseRequiredActionBarActivity(), ScanQRCode
         lifecycleScope.launch(Dispatchers.IO) {
             try {
                 val (threadID, groupID) = if (isV2OpenGroup) {
-                    val server = HttpUrl.Builder().scheme(httpUrl.scheme()).host(httpUrl.host()).build()
+                    val server = HttpUrl.Builder().scheme(httpUrl.scheme()).host(httpUrl.host()).apply {
+                        if (httpUrl.port() != 80 || httpUrl.port() != 443) {
+                            // non-standard port, add to server
+                            this.port(httpUrl.port())
+                        }
+                    }.build()
                     val group = OpenGroupUtilities.addGroup(this@JoinPublicChatActivity, server.toString().removeSuffix("/"), room!!, publicKey!!)
                     val threadID = GroupManager.getOpenGroupThreadID(group.id, this@JoinPublicChatActivity)
                     val groupID = GroupUtil.getEncodedOpenGroupID(group.id.toByteArray())
diff --git a/libsession/src/main/java/org/session/libsession/messaging/open_groups/OpenGroupAPIV2.kt b/libsession/src/main/java/org/session/libsession/messaging/open_groups/OpenGroupAPIV2.kt
index d7ecbd5f1..cb780ba5b 100644
--- a/libsession/src/main/java/org/session/libsession/messaging/open_groups/OpenGroupAPIV2.kt
+++ b/libsession/src/main/java/org/session/libsession/messaging/open_groups/OpenGroupAPIV2.kt
@@ -106,6 +106,7 @@ object OpenGroupAPIV2 {
         val urlBuilder = HttpUrl.Builder()
                 .scheme(parsed.scheme())
                 .host(parsed.host())
+                .port(parsed.port())
                 .addPathSegments(request.endpoint)
 
         if (request.verb == GET) {