diff --git a/scm-webapp/src/main/java/sonia/scm/api/v2/NotSupportedFeatureExceptionMapper.java b/scm-webapp/src/main/java/sonia/scm/api/v2/NotSupportedFeatureExceptionMapper.java
index b2cba5b3d4..6a48663aa5 100644
--- a/scm-webapp/src/main/java/sonia/scm/api/v2/NotSupportedFeatureExceptionMapper.java
+++ b/scm-webapp/src/main/java/sonia/scm/api/v2/NotSupportedFeatureExceptionMapper.java
@@ -6,7 +6,9 @@ import sonia.scm.api.v2.resources.ExceptionWithContextToErrorDtoMapper;
 
 import javax.inject.Inject;
 import javax.ws.rs.core.Response;
+import javax.ws.rs.ext.Provider;
 
+@Provider
 public class NotSupportedFeatureExceptionMapper extends ContextualExceptionMapper<NotSupportedFeatureException> {
   @Inject
   public NotSupportedFeatureExceptionMapper(ExceptionWithContextToErrorDtoMapper mapper) {