diff --git a/app/src/main/java/org/linphone/ui/main/settings/viewmodel/LdapViewModel.kt b/app/src/main/java/org/linphone/ui/main/settings/viewmodel/LdapViewModel.kt
index 4f3cb43e3..dbfe0395c 100644
--- a/app/src/main/java/org/linphone/ui/main/settings/viewmodel/LdapViewModel.kt
+++ b/app/src/main/java/org/linphone/ui/main/settings/viewmodel/LdapViewModel.kt
@@ -136,10 +136,24 @@ class LdapViewModel : GenericViewModel() {
     fun addServer() {
         coreContext.postOnCoreThread { core ->
             try {
+                val server = serverUrl.value.orEmpty().trim()
+                if (server.isEmpty()) {
+                    Log.e("$TAG Server field can't be empty!")
+                    showRedToastEvent.postValue(
+                        Event(
+                            Pair(
+                                R.string.settings_contacts_ldap_empty_server_error_toast,
+                                R.drawable.warning_circle
+                            )
+                        )
+                    )
+                    return@postOnCoreThread
+                }
+
                 val ldapParams = core.createLdapParams()
 
                 ldapParams.enabled = true
-                ldapParams.server = serverUrl.value.orEmpty().trim()
+                ldapParams.server = server
                 ldapParams.bindDn = bindDn.value.orEmpty().trim()
                 ldapParams.password = password.value.orEmpty().trim()
                 ldapParams.authMethod = Ldap.AuthMethod.Simple
diff --git a/app/src/main/res/values-fr/strings.xml b/app/src/main/res/values-fr/strings.xml
index 73790a75e..e80db35fa 100644
--- a/app/src/main/res/values-fr/strings.xml
+++ b/app/src/main/res/values-fr/strings.xml
@@ -204,7 +204,7 @@
     <string name="settings_contacts_carddav_sync_error_toast">Erreur de synchronization !</string>
     <string name="settings_contacts_carddav_deleted_toast">Compte CardDAV supprimé</string>
     <string name="settings_contacts_carddav_mandatory_field_not_filled_toast">Au moins un champ obligatoire n\'est pas rempli</string>
-    <string name="settings_contacts_ldap_server_url_title">URL du serveur</string>
+    <string name="settings_contacts_ldap_server_url_title">URL du serveur (ne peut être vide)</string>
     <string name="settings_contacts_ldap_bind_dn_title">Bind DN</string>
     <string name="settings_contacts_ldap_password_title">Mot de passe</string>
     <string name="settings_contacts_ldap_use_tls_title">Utiliser TLS</string>
@@ -218,6 +218,7 @@
     <string name="settings_contacts_ldap_sip_attributes_title">Attributs SIP</string>
     <string name="settings_contacts_ldap_sip_domain_title">Domaine SIP</string>
     <string name="settings_contacts_ldap_error_toast">Une erreur s\'est produite, la configuration LDAP n\'a pas été sauvegardée !</string>
+    <string name="settings_contacts_ldap_empty_server_error_toast">L\'URL du serveur ne peut être vide</string>
     <string name="settings_meetings_title">Réunions</string>
     <string name="settings_meetings_default_layout_title">Disposition par défaut</string>
     <string name="settings_meetings_layout_active_speaker_label">Intervenant actif</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index d9cee319a..f6ebb9af4 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -240,7 +240,7 @@
     <string name="settings_contacts_carddav_sync_error_toast">Synchronization error!</string>
     <string name="settings_contacts_carddav_deleted_toast">CardDAV account removed</string>
     <string name="settings_contacts_carddav_mandatory_field_not_filled_toast">At least one mandatory field wasn\'t filled</string>
-    <string name="settings_contacts_ldap_server_url_title">Server URL</string>
+    <string name="settings_contacts_ldap_server_url_title">Server URL (can\'t be empty)</string>
     <string name="settings_contacts_ldap_bind_dn_title">Bind DN</string>
     <string name="settings_contacts_ldap_password_title">Password</string>
     <string name="settings_contacts_ldap_use_tls_title">Use TLS</string>
@@ -254,6 +254,7 @@
     <string name="settings_contacts_ldap_sip_attributes_title">SIP attributes</string>
     <string name="settings_contacts_ldap_sip_domain_title">SIP domain</string>
     <string name="settings_contacts_ldap_error_toast">A error occurred, LDAP server not saved!</string>
+    <string name="settings_contacts_ldap_empty_server_error_toast">Server URL can\'t be empty</string>
     <string name="settings_meetings_title">Meetings</string>
     <string name="settings_meetings_default_layout_title">Default layout</string>
     <string name="settings_meetings_layout_active_speaker_label">Active speaker</string>