diff --git a/vector/src/main/java/im/vector/app/features/home/room/list/actions/RoomListQuickActionsEpoxyController.kt b/vector/src/main/java/im/vector/app/features/home/room/list/actions/RoomListQuickActionsEpoxyController.kt
index a943435a46..31bbee4f46 100644
--- a/vector/src/main/java/im/vector/app/features/home/room/list/actions/RoomListQuickActionsEpoxyController.kt
+++ b/vector/src/main/java/im/vector/app/features/home/room/list/actions/RoomListQuickActionsEpoxyController.kt
@@ -34,6 +34,7 @@ import javax.inject.Inject
 class RoomListQuickActionsEpoxyController @Inject constructor(
         private val avatarRenderer: AvatarRenderer,
         private val stringProvider: StringProvider,
+        private val vectorPreferences: VectorPreferences,
         private val scSdkPreferences: ScSdkPreferences
 ) : TypedEpoxyController<RoomListQuickActionsState>() {
 
@@ -57,14 +58,16 @@ class RoomListQuickActionsEpoxyController @Inject constructor(
                 lowPriorityClickListener { listener?.didSelectMenuAction(RoomListQuickActionsSharedAction.LowPriority(roomSummary.roomId)) }
             }
 
-            // Mark read/unread
-            dividerItem {
-                id("mark_unread_separator")
-            }
-            if (roomSummary.scIsUnread(scSdkPreferences)) {
-                RoomListQuickActionsSharedAction.MarkRead(roomSummary.roomId).toBottomSheetItem(-1)
-            } else {
-                RoomListQuickActionsSharedAction.MarkUnread(roomSummary.roomId).toBottomSheetItem(-1)
+            if (vectorPreferences.labAllowMarkUnread()) {
+                // Mark read/unread
+                dividerItem {
+                    id("mark_unread_separator")
+                }
+                if (roomSummary.scIsUnread(scSdkPreferences)) {
+                    RoomListQuickActionsSharedAction.MarkRead(roomSummary.roomId).toBottomSheetItem(-1)
+                } else {
+                    RoomListQuickActionsSharedAction.MarkUnread(roomSummary.roomId).toBottomSheetItem(-1)
+                }
             }
 
             // Notifications
diff --git a/vector/src/main/java/im/vector/app/features/settings/VectorPreferences.kt b/vector/src/main/java/im/vector/app/features/settings/VectorPreferences.kt
index b7a2eb5006..7a50ce3c85 100755
--- a/vector/src/main/java/im/vector/app/features/settings/VectorPreferences.kt
+++ b/vector/src/main/java/im/vector/app/features/settings/VectorPreferences.kt
@@ -183,6 +183,7 @@ class VectorPreferences @Inject constructor(private val context: Context) {
         private const val SETTINGS_ROOM_UNREAD_KIND = "SETTINGS_ROOM_UNREAD_KIND"
         private const val SETTINGS_UNIMPORTANT_COUNTER_BADGE = "SETTINGS_UNIMPORTANT_COUNTER_BADGE"
         private const val SETTINGS_SIMPLIFIED_MODE = "SETTINGS_SIMPLIFIED_MODE"
+        private const val SETTINGS_LABS_ALLOW_MARK_UNREAD = "SETTINGS_LABS_ALLOW_MARK_UNREAD"
 
         private const val DID_ASK_TO_ENABLE_SESSION_PUSH = "DID_ASK_TO_ENABLE_SESSION_PUSH"
 
@@ -884,6 +885,11 @@ class VectorPreferences @Inject constructor(private val context: Context) {
                 .apply()
     }
 
+    // SC addition
+    fun labAllowMarkUnread(): Boolean {
+        return defaultPrefs.getBoolean(SETTINGS_LABS_ALLOW_MARK_UNREAD, false)
+    }
+
     /**
      * The user enable protecting app access with pin code.
      * Currently we use the pin code store to know if the pin is enabled, so this is not used
diff --git a/vector/src/main/res/values-de/strings_sc.xml b/vector/src/main/res/values-de/strings_sc.xml
index 8af06b6abe..5f1434a9cc 100644
--- a/vector/src/main/res/values-de/strings_sc.xml
+++ b/vector/src/main/res/values-de/strings_sc.xml
@@ -44,6 +44,9 @@
     <string name="settings_unimportant_counter_badge">Zähle unwichtige Chat-Ereignisse</string>
     <string name="settings_unimportant_counter_badge_summary">Betrachte auch Chats ohne Benachrichtigung beim Zählen der ungelesenen Nachrichten pro Kategorie</string>
 
+    <string name="labs_mark_rooms_unread">Chats als ungelesen markieren</string>
+    <string name="labs_mark_rooms_unread_summary">Erlaube, Chats als ungelesen zu markieren. Andere Matrix-Clients unterstützen diese Funktionalität möglicherweise noch nicht.</string>
+
     <string name="login_mobile_device_sc">SchildiChat Android</string>
     <string name="bottom_action_all">Übersicht</string>
     <string name="all_list_rooms_empty_title">SchildiChat</string>
diff --git a/vector/src/main/res/values/strings_sc.xml b/vector/src/main/res/values/strings_sc.xml
index 4a6fcd6d30..f56bf9f619 100644
--- a/vector/src/main/res/values/strings_sc.xml
+++ b/vector/src/main/res/values/strings_sc.xml
@@ -44,6 +44,9 @@
     <string name="settings_unimportant_counter_badge">Count unimportant chat events</string>
     <string name="settings_unimportant_counter_badge_summary">Include chats without notifications in the category unread counter</string>
 
+    <string name="labs_mark_rooms_unread">Mark chats as unread</string>
+    <string name="labs_mark_rooms_unread_summary">Allow to mark chats as unread. Other matrix clients might not support this functionality yet.</string>
+
     <string name="login_mobile_device_sc">SchildiChat Android</string>
     <string name="bottom_action_all">Overview</string>
     <string name="all_list_rooms_empty_title">SchildiChat</string>
diff --git a/vector/src/main/res/xml/vector_settings_labs.xml b/vector/src/main/res/xml/vector_settings_labs.xml
index 6654c6f96f..3bf97eb18c 100644
--- a/vector/src/main/res/xml/vector_settings_labs.xml
+++ b/vector/src/main/res/xml/vector_settings_labs.xml
@@ -40,6 +40,12 @@
         android:title="@string/settings_system_dark_theme_pre_ten"
         android:summary="@string/settings_system_dark_theme_pre_ten_summary" />
 
+    <im.vector.app.core.preference.VectorSwitchPreference
+        android:defaultValue="false"
+        android:key="SETTINGS_LABS_ALLOW_MARK_UNREAD"
+        android:title="@string/labs_mark_rooms_unread"
+        android:summary="@string/labs_mark_rooms_unread_summary" />
+
     <im.vector.app.core.preference.VectorSwitchPreference
         android:defaultValue="false"
         android:key="SETTINGS_LABS_ENABLE_SWIPE_TO_REPLY"