diff --git a/library/ui-strings/src/main/res/values/strings.xml b/library/ui-strings/src/main/res/values/strings.xml
index da62e4c300..e772748a41 100644
--- a/library/ui-strings/src/main/res/values/strings.xml
+++ b/library/ui-strings/src/main/res/values/strings.xml
@@ -3347,6 +3347,10 @@
     <string name="device_manager_other_sessions_select">Select sessions</string>
     <string name="device_manager_other_sessions_multi_signout_all">Sign out of these sessions</string>
     <string name="device_manager_other_sessions_multi_signout_selection">Sign out</string>
+    <plurals name="device_manager_other_sessions_multi_signout_all">
+        <item quantity="one">Sign out of %1$d session</item>
+        <item quantity="other">Sign out of %1$d sessions</item>
+    </plurals>
     <string name="device_manager_session_overview_signout">Sign out of this session</string>
     <string name="device_manager_session_details_title">Session details</string>
     <string name="device_manager_session_details_description">Application, device, and activity information.</string>
diff --git a/vector/src/main/java/im/vector/app/features/settings/devices/v2/VectorSettingsDevicesFragment.kt b/vector/src/main/java/im/vector/app/features/settings/devices/v2/VectorSettingsDevicesFragment.kt
index f3de06a324..e9778e1368 100644
--- a/vector/src/main/java/im/vector/app/features/settings/devices/v2/VectorSettingsDevicesFragment.kt
+++ b/vector/src/main/java/im/vector/app/features/settings/devices/v2/VectorSettingsDevicesFragment.kt
@@ -19,11 +19,9 @@ package im.vector.app.features.settings.devices.v2
 import android.content.Context
 import android.os.Bundle
 import android.view.LayoutInflater
-import android.view.MenuItem
 import android.view.View
 import android.view.ViewGroup
 import androidx.appcompat.app.AppCompatActivity
-import androidx.appcompat.widget.ActionMenuView.OnMenuItemClickListener
 import androidx.core.view.isVisible
 import com.airbnb.mvrx.Success
 import com.airbnb.mvrx.fragmentViewModel
@@ -50,7 +48,6 @@ import im.vector.app.features.settings.devices.v2.list.SESSION_IS_MARKED_AS_INAC
 import im.vector.app.features.settings.devices.v2.list.SecurityRecommendationView
 import im.vector.app.features.settings.devices.v2.list.SecurityRecommendationViewState
 import im.vector.app.features.settings.devices.v2.list.SessionInfoViewState
-import im.vector.app.features.settings.devices.v2.othersessions.OtherSessionsAction
 import org.matrix.android.sdk.api.session.crypto.model.RoomEncryptionTrustLevel
 import javax.inject.Inject
 
@@ -137,10 +134,8 @@ class VectorSettingsDevicesFragment :
     }
 
     private fun initOtherSessionsHeaderView() {
-        val color = colorProvider.getColorFromAttribute(R.attr.colorError)
-        views.deviceListHeaderOtherSessions.menu.findItem(R.id.otherSessionsHeaderMultiSignout).setTextColor(color)
         views.deviceListHeaderOtherSessions.setOnMenuItemClickListener { menuItem ->
-            when(menuItem.itemId) {
+            when (menuItem.itemId) {
                 R.id.otherSessionsHeaderMultiSignout -> {
                     viewModel.handle(DevicesAction.MultiSignoutOtherSessions)
                     true
@@ -290,6 +285,11 @@ class VectorSettingsDevicesFragment :
             hideOtherSessionsView()
         } else {
             views.deviceListHeaderOtherSessions.isVisible = true
+            val color = colorProvider.getColorFromAttribute(R.attr.colorError)
+            val multiSignoutItem = views.deviceListHeaderOtherSessions.menu.findItem(R.id.otherSessionsHeaderMultiSignout)
+            val nbDevices = otherDevices.size
+            multiSignoutItem.title = stringProvider.getQuantityString(R.plurals.device_manager_other_sessions_multi_signout_all, nbDevices, nbDevices)
+            multiSignoutItem.setTextColor(color)
             views.deviceListOtherSessions.isVisible = true
             views.deviceListOtherSessions.render(
                     devices = otherDevices.take(NUMBER_OF_OTHER_DEVICES_TO_RENDER),
diff --git a/vector/src/main/java/im/vector/app/features/settings/devices/v2/othersessions/OtherSessionsFragment.kt b/vector/src/main/java/im/vector/app/features/settings/devices/v2/othersessions/OtherSessionsFragment.kt
index 8059a75c12..0429c3bbb3 100644
--- a/vector/src/main/java/im/vector/app/features/settings/devices/v2/othersessions/OtherSessionsFragment.kt
+++ b/vector/src/main/java/im/vector/app/features/settings/devices/v2/othersessions/OtherSessionsFragment.kt
@@ -87,7 +87,8 @@ class OtherSessionsFragment :
         multiSignoutItem.title = if (viewState.isSelectModeEnabled) {
             getString(R.string.device_manager_other_sessions_multi_signout_selection).uppercase()
         } else {
-            getString(R.string.device_manager_other_sessions_multi_signout_all)
+            val nbDevices = viewState.devices()?.size ?: 0
+            stringProvider.getQuantityString(R.plurals.device_manager_other_sessions_multi_signout_all, nbDevices, nbDevices)
         }
         multiSignoutItem.isVisible = if (viewState.isSelectModeEnabled) {
             viewState.devices.invoke()?.any { it.isSelected }.orFalse()
diff --git a/vector/src/main/res/menu/menu_other_sessions.xml b/vector/src/main/res/menu/menu_other_sessions.xml
index d4a75bd0df..7893575dde 100644
--- a/vector/src/main/res/menu/menu_other_sessions.xml
+++ b/vector/src/main/res/menu/menu_other_sessions.xml
@@ -11,7 +11,7 @@
 
     <item
         android:id="@+id/otherSessionsMultiSignout"
-        android:title="@string/device_manager_other_sessions_multi_signout_all"
+        android:title="@plurals/device_manager_other_sessions_multi_signout_all"
         app:showAsAction="withText|never" />
 
     <item
diff --git a/vector/src/main/res/menu/menu_other_sessions_header.xml b/vector/src/main/res/menu/menu_other_sessions_header.xml
index 4ab0b7465c..00778ed36e 100644
--- a/vector/src/main/res/menu/menu_other_sessions_header.xml
+++ b/vector/src/main/res/menu/menu_other_sessions_header.xml
@@ -6,7 +6,7 @@
 
     <item
         android:id="@+id/otherSessionsHeaderMultiSignout"
-        android:title="@string/device_manager_other_sessions_multi_signout_all"
+        android:title="@plurals/device_manager_other_sessions_multi_signout_all"
         app:showAsAction="withText|never" />
 
 </menu>