diff --git a/src/Sonarr.Http/Extensions/Pipelines/SonarrVersionPipeline.cs b/src/Sonarr.Http/Extensions/Pipelines/SonarrVersionPipeline.cs
index cb25e6833..aefd6ceb4 100644
--- a/src/Sonarr.Http/Extensions/Pipelines/SonarrVersionPipeline.cs
+++ b/src/Sonarr.Http/Extensions/Pipelines/SonarrVersionPipeline.cs
@@ -16,9 +16,9 @@ namespace Sonarr.Http.Extensions.Pipelines
 
         private void Handle(NancyContext context)
         {
-            if (!context.Response.Headers.ContainsKey("X-ApplicationVersion"))
+            if (!context.Response.Headers.ContainsKey("X-Application-Version"))
             {
-                context.Response.Headers.Add("X-ApplicationVersion", BuildInfo.Version.ToString());
+                context.Response.Headers.Add("X-Application-Version", BuildInfo.Version.ToString());
             }
         }
     }