diff --git a/src/FilterLists.Api/Startup.cs b/src/FilterLists.Api/Startup.cs
index dcc964a74..44bab67a1 100644
--- a/src/FilterLists.Api/Startup.cs
+++ b/src/FilterLists.Api/Startup.cs
@@ -60,8 +60,8 @@ public void Configure(IApplicationBuilder app, IHostingEnvironment env)
             app.UseMvc();
             app.UseSwagger(c =>
             {
-                c.RouteTemplate = "docs/{documentName}/swagger.json";
                 c.PreSerializeFilters.Add((swaggerDoc, httpReq) => swaggerDoc.Host = httpReq.Host.Value);
+                c.RouteTemplate = "docs/{documentName}/swagger.json";
                 UseLowercaseControllerNameInSwaggerHack(c);
             });
             app.UseSwaggerUI(c =>