diff --git a/scm-core/src/main/java/sonia/scm/web/filter/AuthenticationFilter.java b/scm-core/src/main/java/sonia/scm/web/filter/AuthenticationFilter.java
index 81afa04a67..c6a8463998 100644
--- a/scm-core/src/main/java/sonia/scm/web/filter/AuthenticationFilter.java
+++ b/scm-core/src/main/java/sonia/scm/web/filter/AuthenticationFilter.java
@@ -70,6 +70,7 @@ import javax.servlet.http.HttpServletResponse;
  * @author Sebastian Sdorra
  * @since 2.0.0
  */
+@Singleton
 public class AuthenticationFilter extends HttpFilter
 {