diff --git a/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/group/GroupHeaderView.kt b/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/group/GroupHeaderView.kt
index 883c591fd2..9dbeb83a3c 100644
--- a/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/group/GroupHeaderView.kt
+++ b/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/group/GroupHeaderView.kt
@@ -26,9 +26,11 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.draw.rotate
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.semantics.Role
 import androidx.compose.ui.semantics.clearAndSetSemantics
 import androidx.compose.ui.semantics.contentDescription
+import androidx.compose.ui.semantics.stateDescription
 import androidx.compose.ui.unit.dp
 import io.element.android.compound.theme.ElementTheme
 import io.element.android.compound.tokens.generated.CompoundIcons
@@ -37,6 +39,7 @@ import io.element.android.libraries.designsystem.preview.PreviewsDayNight
 import io.element.android.libraries.designsystem.theme.components.Icon
 import io.element.android.libraries.designsystem.theme.components.Surface
 import io.element.android.libraries.designsystem.theme.components.Text
+import io.element.android.libraries.ui.strings.CommonStrings
 
 private val CORNER_RADIUS = 8.dp
 
@@ -52,6 +55,8 @@ fun GroupHeaderView(
     val backgroundColor = Color.Transparent
     val shape = RoundedCornerShape(CORNER_RADIUS)
 
+    val expandedStateDescription = stringResource(CommonStrings.a11y_state_expanded)
+    val collapsedStateDescription = stringResource(CommonStrings.a11y_state_collapsed)
     Box(
         modifier = modifier
             .fillMaxWidth()
@@ -62,6 +67,7 @@ fun GroupHeaderView(
             )
             .clearAndSetSemantics {
                 contentDescription = text
+                stateDescription = if (isExpanded) expandedStateDescription else collapsedStateDescription
             },
         contentAlignment = Alignment.Center
     ) {
diff --git a/libraries/ui-strings/src/main/res/values/temporary.xml b/libraries/ui-strings/src/main/res/values/temporary.xml
index c0573cc6c2..2526f254d3 100644
--- a/libraries/ui-strings/src/main/res/values/temporary.xml
+++ b/libraries/ui-strings/src/main/res/values/temporary.xml
@@ -8,6 +8,8 @@
 <resources>
     <string name="action_mark_as_read">"Mark as read"</string>
     <string name="a11y_jump_to_unread_messages">"Jump to first unread message"</string>
+    <string name="a11y_state_expanded">"Expanded"</string>
+    <string name="a11y_state_collapsed">"Collapsed"</string>
     <string name="screen_local_network_opt_in_title">Allow access to local network</string>
     <string name="screen_local_network_opt_in_subtitle">Your homeserver is on your local network. To connect, Element needs permission to reach other devices on this network.</string>
     <string name="a11y_active">Active</string>
diff --git a/tests/uitests/src/test/snapshots/images/features.messages.impl_MessagesViewA11y_en.png b/tests/uitests/src/test/snapshots/images/features.messages.impl_MessagesViewA11y_en.png
index b2b3f0b813..f47e74ab7b 100644
--- a/tests/uitests/src/test/snapshots/images/features.messages.impl_MessagesViewA11y_en.png
+++ b/tests/uitests/src/test/snapshots/images/features.messages.impl_MessagesViewA11y_en.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:02c4892eaa7d27c867266c428374b64e5915ec50ddcdf8b1d532e1cbc6f56462
-size 130436
+oid sha256:5823ae9a382421609200d569799505706180b94c6923f315caa81f8767ac58f8
+size 131340