diff --git a/TelegramBotAPI-extensions-api/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/extensions/api/updates/UpdatesPolling.kt b/TelegramBotAPI-extensions-api/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/extensions/api/updates/UpdatesPolling.kt
index 5deeb7fcb4..6a078b810a 100644
--- a/TelegramBotAPI-extensions-api/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/extensions/api/updates/UpdatesPolling.kt
+++ b/TelegramBotAPI-extensions-api/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/extensions/api/updates/UpdatesPolling.kt
@@ -68,7 +68,9 @@ fun RequestsExecutor.startGettingOfUpdates(
  * [kotlinx.coroutines.flow.Flow.collect] on one of [FlowsUpdatesFilter] flows. To avoid it, you can pass
  * [flowUpdatesPreset] lambda - it will be called BEFORE starting updates getting
  */
+@FlowPreview
 @PreviewFeature
+@Suppress("unused")
 fun RequestsExecutor.startGettingFlowsUpdates(
     timeoutSeconds: Seconds = 30,
     scope: CoroutineScope = CoroutineScope(Dispatchers.Default),
@@ -137,6 +139,7 @@ fun RequestsExecutor.startGettingOfUpdates(
     )
 }
 
+@Suppress("unused")
 fun RequestsExecutor.startGettingOfUpdates(
     messageCallback: UpdateReceiver<MessageUpdate>? = null,
     mediaGroupCallback: UpdateReceiver<MediaGroupUpdate>? = null,
diff --git a/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/send/polls/SendPoll.kt b/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/send/polls/SendPoll.kt
index a87e377025..662d1c69e4 100644
--- a/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/send/polls/SendPoll.kt
+++ b/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/send/polls/SendPoll.kt
@@ -85,7 +85,7 @@ fun Poll.createRequest(
             correctOptionId,
             isAnonymous,
             isClosed,
-            caption ?.fullListOfSubSource(captionEntities) ?.justTextSources() ?.toMarkdownV2Captions() ?.firstOrNull(),
+            explanation ?.fullListOfSubSource(explanationEntities) ?.justTextSources() ?.toMarkdownV2Captions() ?.firstOrNull(),
             MarkdownV2,
             scheduledCloseInfo,
             disableNotification,
diff --git a/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/polls/Poll.kt b/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/polls/Poll.kt
index e926c18890..8b1f45bd55 100644
--- a/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/polls/Poll.kt
+++ b/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/polls/Poll.kt
@@ -212,8 +212,8 @@ internal object PollSerializer : KSerializer<Poll> {
                 value.isAnonymous,
                 regularPollType,
                 correctOptionId = value.correctOptionId,
-                explanation = value.caption,
-                explanationEntities = value.captionEntities.asRawMessageEntities(),
+                explanation = value.explanation,
+                explanationEntities = value.explanationEntities.asRawMessageEntities(),
                 openPeriod = (closeInfo as? ApproximateScheduledCloseInfo) ?.openDuration ?.seconds ?.toLong(),
                 closeDate = (closeInfo as? ExactScheduledCloseInfo) ?.closeDateTime ?.unixMillisLong ?.div(1000L)
             )
diff --git a/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/utils/JSON.kt b/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/utils/JSON.kt
index 89aca12d12..1c26099558 100644
--- a/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/utils/JSON.kt
+++ b/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/utils/JSON.kt
@@ -3,6 +3,7 @@ package com.github.insanusmokrassar.TelegramBotAPI.utils
 import kotlinx.serialization.SerializationStrategy
 import kotlinx.serialization.json.*
 
+@Suppress("EXPERIMENTAL_API_USAGE")
 internal val nonstrictJsonFormat = Json {
     isLenient = true
     ignoreUnknownKeys = true
diff --git a/TelegramBotAPI/src/commonTest/kotlin/com/github/insanusmokrassar/TelegramBotAPI/TestsJsonFormat.kt b/TelegramBotAPI/src/commonTest/kotlin/com/github/insanusmokrassar/TelegramBotAPI/TestsJsonFormat.kt
index 50219dd4c5..57d6f8185c 100644
--- a/TelegramBotAPI/src/commonTest/kotlin/com/github/insanusmokrassar/TelegramBotAPI/TestsJsonFormat.kt
+++ b/TelegramBotAPI/src/commonTest/kotlin/com/github/insanusmokrassar/TelegramBotAPI/TestsJsonFormat.kt
@@ -4,9 +4,3 @@ import kotlinx.serialization.json.Json
 import kotlinx.serialization.json.JsonConfiguration
 
 val TestsJsonFormat = Json(JsonConfiguration.Stable)
-val NonstrictTestsJsonFormat = Json {
-    isLenient = true
-    ignoreUnknownKeys = true
-    serializeSpecialFloatingPointValues = true
-    useArrayPolymorphism = true
-}