diff --git a/src/SwaggerWcf/Support/TypeExtensions.cs b/src/SwaggerWcf/Support/TypeExtensions.cs
index 96e3076..0ae7934 100644
--- a/src/SwaggerWcf/Support/TypeExtensions.cs
+++ b/src/SwaggerWcf/Support/TypeExtensions.cs
@@ -27,7 +27,10 @@ public static string GetModelWrappedName(this Type type) =>
 
         internal static Info GetServiceInfo(this TypeInfo typeInfo)
         {
-            var infoAttr = typeInfo.GetCustomAttribute<SwaggerWcfServiceInfoAttribute>() ??
+            var infoAttr = typeInfo.GetCustomAttribute<SwaggerWcfServiceInfoAttribute>();
+            if (infoAttr == null && SwaggerWcfEndpoint.Info != null)
+                return SwaggerWcfEndpoint.Info;
+            else if (infoAttr == null && SwaggerWcfEndpoint.Info == null)
                 throw new ArgumentException($"{typeInfo.FullName} does not have {nameof(SwaggerWcfServiceInfoAttribute)}");
 
             var info = (Info)infoAttr;