diff --git a/backend/src/Host/Program.cs b/backend/src/Host/Program.cs
index e73f20a..6f1384e 100644
--- a/backend/src/Host/Program.cs
+++ b/backend/src/Host/Program.cs
@@ -49,7 +49,7 @@ var builder = WebApplication.CreateBuilder(args);
 // Маппинг стандартных переменных окружения в иерархию .NET
 var envMappings = new Dictionary<string, string?>
 {
-    ["ConnectionStrings:DefaultConnection"] = builder.Configuration["DATABASE_URL"] ?? "Host=localhost;Database=knot;Username=postgres;Password=postgres",
+    ["ConnectionStrings:DefaultConnection"] = builder.Configuration["DATABASE_URL"] ?? builder.Configuration.GetConnectionString("DefaultConnection") ?? "Host=localhost;Database=knot;Username=postgres;Password=postgres",
     ["ConnectionStrings:MongoConnection"] = builder.Configuration["MONGO_CONNECTION"],
     ["Jwt:Secret"] = builder.Configuration["JWT_SECRET"],
     ["Jwt:Issuer"] = builder.Configuration["JWT_ISSUER"],