diff --git a/vector/src/main/java/im/vector/app/features/home/room/detail/RoomDetailFragment.kt b/vector/src/main/java/im/vector/app/features/home/room/detail/RoomDetailFragment.kt
index 8380774a49..9157ec3a2c 100644
--- a/vector/src/main/java/im/vector/app/features/home/room/detail/RoomDetailFragment.kt
+++ b/vector/src/main/java/im/vector/app/features/home/room/detail/RoomDetailFragment.kt
@@ -161,7 +161,7 @@ import im.vector.app.features.home.room.detail.timeline.url.PreviewUrlRetriever
 import im.vector.app.features.home.room.detail.upgrade.MigrateRoomBottomSheet
 import im.vector.app.features.home.room.detail.views.RoomDetailLazyLoadedViews
 import im.vector.app.features.home.room.detail.widget.RoomWidgetsBottomSheet
-import im.vector.app.features.home.room.threads.detail.RoomThreadDetailArgs
+import im.vector.app.features.home.room.threads.detail.arguments.RoomThreadDetailArgs
 import im.vector.app.features.home.room.threads.detail.RoomThreadDetailActivity
 import im.vector.app.features.html.EventHtmlRenderer
 import im.vector.app.features.html.PillImageSpan
@@ -1962,7 +1962,11 @@ class RoomDetailFragment @Inject constructor(
             is EventSharedAction.ReplyInThread              -> {
                 if (!views.voiceMessageRecorderView.isActive()) {
                     context?.let {
-                        val roomThreadDetailArgs = RoomThreadDetailArgs(roomDetailArgs.roomId,action.eventId)
+                        val roomThreadDetailArgs = RoomThreadDetailArgs(
+                                roomId = roomDetailArgs.roomId,
+                                displayName = roomDetailViewModel.getRoomSummary()?.displayName,
+                                avatarUrl = roomDetailViewModel.getRoomSummary()?.avatarUrl,
+                                eventId = action.eventId)
                         startActivity(RoomThreadDetailActivity.newIntent(it, roomThreadDetailArgs))
                     }
                 } else {
diff --git a/vector/src/main/java/im/vector/app/features/home/room/detail/RoomDetailViewModel.kt b/vector/src/main/java/im/vector/app/features/home/room/detail/RoomDetailViewModel.kt
index 0c0e5ee6cd..b9622ae9ae 100644
--- a/vector/src/main/java/im/vector/app/features/home/room/detail/RoomDetailViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/home/room/detail/RoomDetailViewModel.kt
@@ -282,6 +282,8 @@ class RoomDetailViewModel @AssistedInject constructor(
 
     fun getOtherUserIds() = room.roomSummary()?.otherMemberIds
 
+    fun getRoomSummary() = room.roomSummary()
+
     override fun handle(action: RoomDetailAction) {
         when (action) {
             is RoomDetailAction.ComposerFocusChange              -> handleComposerFocusChange(action)
diff --git a/vector/src/main/java/im/vector/app/features/home/room/threads/detail/RoomThreadDetailActivity.kt b/vector/src/main/java/im/vector/app/features/home/room/threads/detail/RoomThreadDetailActivity.kt
index 96b65d0272..25dd1e6031 100644
--- a/vector/src/main/java/im/vector/app/features/home/room/threads/detail/RoomThreadDetailActivity.kt
+++ b/vector/src/main/java/im/vector/app/features/home/room/threads/detail/RoomThreadDetailActivity.kt
@@ -24,9 +24,16 @@ import im.vector.app.core.di.ScreenComponent
 import im.vector.app.core.extensions.replaceFragment
 import im.vector.app.core.platform.VectorBaseActivity
 import im.vector.app.databinding.ActivityRoomThreadDetailBinding
+import im.vector.app.features.home.AvatarRenderer
+import im.vector.app.features.home.room.threads.detail.arguments.RoomThreadDetailArgs
+import org.matrix.android.sdk.api.util.MatrixItem
+import javax.inject.Inject
 
 class RoomThreadDetailActivity : VectorBaseActivity<ActivityRoomThreadDetailBinding>() {
 
+    @Inject
+    lateinit var avatarRenderer: AvatarRenderer
+
 //    private val roomThreadDetailFragment: RoomThreadDetailFragment?
 //        get() {
 //            return supportFragmentManager.findFragmentByTag(FRAGMENT_TAG) as? RoomThreadDetailFragment
@@ -44,20 +51,34 @@ class RoomThreadDetailActivity : VectorBaseActivity<ActivityRoomThreadDetailBind
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+
+        initToolbar()
+        initFragment()
+    }
+
+    private fun initToolbar() {
         configureToolbar(views.roomThreadDetailToolbar)
-        if (isFirstCreation()) {
-            val roomThreadDetailArgs: RoomThreadDetailArgs? = intent?.extras?.getParcelable(EXTRA_ROOM_THREAD_DETAIL_ARGS)
-            replaceFragment(R.id.roomThreadDetailFragmentContainer, RoomThreadDetailFragment::class.java, roomThreadDetailArgs, FRAGMENT_TAG)
+        getRoomThreadDetailArgs()?.let {
+            val matrixItem = MatrixItem.RoomItem(it.roomId, it.displayName, it.avatarUrl)
+            avatarRenderer.render(matrixItem, views.roomThreadDetailToolbarImageView)
         }
     }
 
+    private fun initFragment() {
+        if (isFirstCreation()) {
+            replaceFragment(R.id.roomThreadDetailFragmentContainer, RoomThreadDetailFragment::class.java, getRoomThreadDetailArgs(), FRAGMENT_TAG)
+        }
+    }
+
+    private fun getRoomThreadDetailArgs(): RoomThreadDetailArgs? = intent?.extras?.getParcelable(ROOM_THREAD_DETAIL_ARGS)
+
     companion object {
-        private const val FRAGMENT_TAG = "RoomThreadDetailFragment"
-        const val EXTRA_ROOM_THREAD_DETAIL_ARGS = "EXTRA_ROOM_THREAD_DETAIL_ARGS"
+        private val FRAGMENT_TAG = RoomThreadDetailFragment::class.simpleName
+        const val ROOM_THREAD_DETAIL_ARGS = "ROOM_THREAD_DETAIL_ARGS"
 
         fun newIntent(context: Context, roomThreadDetailArgs: RoomThreadDetailArgs): Intent {
             return Intent(context, RoomThreadDetailActivity::class.java).apply {
-                putExtra(EXTRA_ROOM_THREAD_DETAIL_ARGS, roomThreadDetailArgs)
+                putExtra(ROOM_THREAD_DETAIL_ARGS, roomThreadDetailArgs)
             }
         }
     }
diff --git a/vector/src/main/java/im/vector/app/features/home/room/threads/detail/RoomThreadDetailFragment.kt b/vector/src/main/java/im/vector/app/features/home/room/threads/detail/RoomThreadDetailFragment.kt
index c50fdcd9ae..967eb40cf9 100644
--- a/vector/src/main/java/im/vector/app/features/home/room/threads/detail/RoomThreadDetailFragment.kt
+++ b/vector/src/main/java/im/vector/app/features/home/room/threads/detail/RoomThreadDetailFragment.kt
@@ -18,27 +18,20 @@ package im.vector.app.features.home.room.threads.detail
 
 import android.annotation.SuppressLint
 import android.os.Bundle
-import android.os.Parcelable
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import com.airbnb.mvrx.args
 import im.vector.app.core.platform.VectorBaseFragment
 import im.vector.app.databinding.FragmentRoomThreadDetailBinding
-import kotlinx.parcelize.Parcelize
+import im.vector.app.features.home.room.threads.detail.arguments.RoomThreadDetailArgs
 import org.matrix.android.sdk.api.session.Session
 import javax.inject.Inject
 
-@Parcelize
-data class RoomThreadDetailArgs(
-        val roomId: String,
-        val eventId: String? = null,
-) : Parcelable
-
 class RoomThreadDetailFragment @Inject constructor(
         private val session: Session
-) :
-        VectorBaseFragment<FragmentRoomThreadDetailBinding>() {
+) : VectorBaseFragment<FragmentRoomThreadDetailBinding>() {
+
     private val roomThreadDetailArgs: RoomThreadDetailArgs by args()
 
     override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentRoomThreadDetailBinding {
diff --git a/vector/src/main/java/im/vector/app/features/home/room/threads/detail/arguments/RoomThreadDetailArgs.kt b/vector/src/main/java/im/vector/app/features/home/room/threads/detail/arguments/RoomThreadDetailArgs.kt
new file mode 100644
index 0000000000..5fce24cd0d
--- /dev/null
+++ b/vector/src/main/java/im/vector/app/features/home/room/threads/detail/arguments/RoomThreadDetailArgs.kt
@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2021 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.app.features.home.room.threads.detail.arguments
+
+import android.os.Parcelable
+import kotlinx.parcelize.Parcelize
+
+@Parcelize
+data class RoomThreadDetailArgs(
+        val roomId: String,
+        val displayName: String?,
+        val avatarUrl: String?,
+        val eventId: String? = null,
+) : Parcelable