diff --git a/transport/src/androidUnitTest/kotlin/transport/core/MessageExtensionTest.kt b/transport/src/androidUnitTest/kotlin/transport/core/MessageExtensionTest.kt
index 6fb6ae49..62061775 100644
--- a/transport/src/androidUnitTest/kotlin/transport/core/MessageExtensionTest.kt
+++ b/transport/src/androidUnitTest/kotlin/transport/core/MessageExtensionTest.kt
@@ -42,7 +42,6 @@ import com.genesys.cloud.messenger.transport.utility.MessageValues
 import com.genesys.cloud.messenger.transport.utility.QuickReplyTestValues
 import com.genesys.cloud.messenger.transport.utility.StructuredMessageValues
 import com.genesys.cloud.messenger.transport.utility.TestValues
-import kotlinx.serialization.decodeFromString
 import kotlinx.serialization.encodeToString
 import net.bytebuddy.utility.RandomString
 import org.junit.Test
@@ -172,13 +171,13 @@ internal class MessageExtensionTest {
                     "first test attachment id" to Attachment(
                         id = "first test attachment id",
                         fileName = "test.png",
-                        fileSize = AttachmentValues.FileSize,
+                        fileSizeInBytes = AttachmentValues.FileSize,
                         Attachment.State.Uploaded("http://test.com")
                     ),
                     "second test attachment id" to Attachment(
                         id = "second test attachment id",
                         fileName = "test2.png",
-                        fileSize = null,
+                        fileSizeInBytes = null,
                         Attachment.State.Detached,
                     )
                 )
@@ -188,7 +187,7 @@ internal class MessageExtensionTest {
             attachment = Attachment(
                 id = "first test attachment id",
                 fileName = "test.png",
-                fileSize = AttachmentValues.FileSize,
+                fileSizeInBytes = AttachmentValues.FileSize,
                 state = Attachment.State.Uploaded("http://test.com")
             )
         )
diff --git a/transport/src/commonMain/kotlin/com/genesys/cloud/messenger/transport/core/Attachment.kt b/transport/src/commonMain/kotlin/com/genesys/cloud/messenger/transport/core/Attachment.kt
index aa69133c..7f0aff76 100644
--- a/transport/src/commonMain/kotlin/com/genesys/cloud/messenger/transport/core/Attachment.kt
+++ b/transport/src/commonMain/kotlin/com/genesys/cloud/messenger/transport/core/Attachment.kt
@@ -10,7 +10,7 @@ import kotlinx.serialization.Transient
 data class Attachment(
     val id: String,
     @Transient val fileName: String? = null,
-    @Transient val fileSize: Int? = null,
+    @Transient val fileSizeInBytes: Int? = null,
     @Transient val state: State = State.Presigning,
 ) {
     /**
diff --git a/transport/src/commonMain/kotlin/com/genesys/cloud/messenger/transport/util/extensions/MessageExtension.kt b/transport/src/commonMain/kotlin/com/genesys/cloud/messenger/transport/util/extensions/MessageExtension.kt
index 5b49e711..f8d9751c 100644
--- a/transport/src/commonMain/kotlin/com/genesys/cloud/messenger/transport/util/extensions/MessageExtension.kt
+++ b/transport/src/commonMain/kotlin/com/genesys/cloud/messenger/transport/util/extensions/MessageExtension.kt
@@ -78,7 +78,7 @@ private fun List<AttachmentContent>.toAttachments(): Map<String, Attachment> {
             attachment.id to Attachment(
                 id = attachment.id,
                 fileName = attachment.filename,
-                fileSize = attachment.fileSize,
+                fileSizeInBytes = attachment.fileSize,
                 state = Attachment.State.Sent(attachment.url),
             )
         }