diff --git a/app/src/main/java/org/linphone/activities/main/conference/viewmodels/ConferenceSchedulingViewModel.kt b/app/src/main/java/org/linphone/activities/main/conference/viewmodels/ConferenceSchedulingViewModel.kt
index 807e30466..889be946c 100644
--- a/app/src/main/java/org/linphone/activities/main/conference/viewmodels/ConferenceSchedulingViewModel.kt
+++ b/app/src/main/java/org/linphone/activities/main/conference/viewmodels/ConferenceSchedulingViewModel.kt
@@ -31,6 +31,7 @@ import org.linphone.contact.ContactsSelectionViewModel
 import org.linphone.core.*
 import org.linphone.core.tools.Log
 import org.linphone.utils.Event
+import org.linphone.utils.LinphoneUtils
 import org.linphone.utils.TimestampUtils
 
 class ConferenceSchedulingViewModel : ContactsSelectionViewModel() {
@@ -90,9 +91,14 @@ class ConferenceSchedulingViewModel : ContactsSelectionViewModel() {
                     // Send conference info even when conf is not scheduled for later
                     // as the conference server doesn't invite participants automatically
                     val chatRoomParams = coreContext.core.createDefaultChatRoomParams()
-                    chatRoomParams.backend = ChatRoomBackend.FlexisipChat
                     chatRoomParams.isGroupEnabled = false
-                    chatRoomParams.isEncryptionEnabled = true
+                    if (LinphoneUtils.isEndToEndEncryptedChatAvailable()) {
+                        chatRoomParams.backend = ChatRoomBackend.FlexisipChat
+                        chatRoomParams.isEncryptionEnabled = true
+                    } else {
+                        chatRoomParams.backend = ChatRoomBackend.Basic
+                        chatRoomParams.isEncryptionEnabled = false
+                    }
                     chatRoomParams.subject = subject.value
                     conferenceScheduler.sendInvitations(chatRoomParams)
                 } else {
diff --git a/app/src/main/java/org/linphone/utils/LinphoneUtils.kt b/app/src/main/java/org/linphone/utils/LinphoneUtils.kt
index 896a32013..9d323dee1 100644
--- a/app/src/main/java/org/linphone/utils/LinphoneUtils.kt
+++ b/app/src/main/java/org/linphone/utils/LinphoneUtils.kt
@@ -106,7 +106,7 @@ class LinphoneUtils {
 
         fun isEndToEndEncryptedChatAvailable(): Boolean {
             val core = coreContext.core
-            return core.limeX3DhAvailable() &&
+            return core.isLimeX3DhEnabled &&
                 core.defaultAccount?.params?.limeServerUrl != null &&
                 core.defaultAccount?.params?.conferenceFactoryUri != null
         }