diff --git a/src/Microsoft.SqlTools.ServiceLayer/Security/LoginData.cs b/src/Microsoft.SqlTools.ServiceLayer/Security/LoginData.cs
index f9b329d4..5e5d365d 100644
--- a/src/Microsoft.SqlTools.ServiceLayer/Security/LoginData.cs
+++ b/src/Microsoft.SqlTools.ServiceLayer/Security/LoginData.cs
@@ -2097,7 +2097,11 @@ INNER JOIN sys.sql_logins AS sql_logins
             && 0 != String.Compare(login.DefaultLanguage, SR.DefaultLanguagePlaceholder, StringComparison.Ordinal)
             && (server.DatabaseEngineType == DatabaseEngineType.Standalone|| server.DatabaseEngineEdition == DatabaseEngineEdition.SqlManagedInstance))
             {
-                this.DefaultLanguage = login.DefaultLanguage.Split(" - ")[1];
+                string[] arr = login.DefaultLanguage?.Split(" - ");
+                if (arr != null && arr.Length > 1)
+                {
+                    this.DefaultLanguage = arr[1];
+                }
             }
             this.DefaultDatabase = login.DefaultDatabase;
             this.EnforcePolicy = login.EnforcePasswordPolicy;
diff --git a/src/Microsoft.SqlTools.ServiceLayer/Security/SecurityService.cs b/src/Microsoft.SqlTools.ServiceLayer/Security/SecurityService.cs
index ad3f9f82..f6909447 100644
--- a/src/Microsoft.SqlTools.ServiceLayer/Security/SecurityService.cs
+++ b/src/Microsoft.SqlTools.ServiceLayer/Security/SecurityService.cs
@@ -204,7 +204,11 @@ namespace Microsoft.SqlTools.ServiceLayer.Security
             prototype.SqlPassword = login.Password;
             if (0 != String.Compare(login.DefaultLanguage, SR.DefaultLanguagePlaceholder, StringComparison.Ordinal))
             {
-                prototype.DefaultLanguage = login.DefaultLanguage.Split(" - ")[1];
+                string[] arr = login.DefaultLanguage?.Split(" - ");
+                if (arr != null && arr.Length > 1)
+                {
+                    prototype.DefaultLanguage = arr[1];
+                }
             }
             prototype.DefaultDatabase = login.DefaultDatabase;
             prototype.EnforcePolicy = login.EnforcePasswordPolicy;