diff --git a/API_SQLuedo/API/Program.cs b/API_SQLuedo/API/Program.cs
index 45dbd20..35c1527 100644
--- a/API_SQLuedo/API/Program.cs
+++ b/API_SQLuedo/API/Program.cs
@@ -42,7 +42,17 @@ builder.Services.AddDbContext<UserDbContext>(options =>
     if (builder.Environment.IsProduction())
     {
         Console.WriteLine("I am in production mode");
-        options.UseNpgsql(Environment.GetEnvironmentVariable("CO_STRING", EnvironmentVariableTarget.Process));
+        var address = Environment.GetEnvironmentVariable("DB_HOST", EnvironmentVariableTarget.Process)
+                      ?? throw new ArgumentException("Missing DB_HOST environment variable");
+        var database = Environment.GetEnvironmentVariable("DB_DATABASE", EnvironmentVariableTarget.Process)
+                       ?? throw new ArgumentException("Missing DB_DATABASE environment variable");
+        var user = Environment.GetEnvironmentVariable("DB_USER", EnvironmentVariableTarget.Process)
+                   ?? throw new ArgumentException("Missing DB_USER environment variable");
+        var password = Environment.GetEnvironmentVariable("DB_PASSWORD", EnvironmentVariableTarget.Process)
+                       ?? throw new ArgumentException("Missing DB_PASSWORD environment variable");
+
+        var coString = $"Host={address};Database={database};Username={user};Password={password}";
+        options.UseNpgsql(coString);
     }
     else
     {