diff --git a/registry/api/errcode/errors.go b/registry/api/errcode/errors.go
index 54856cc5c..a8b52c188 100644
--- a/registry/api/errcode/errors.go
+++ b/registry/api/errcode/errors.go
@@ -224,11 +224,20 @@ func (errs Errors) MarshalJSON() ([]byte, error) {
 			msg = err.Code.Message()
 		}
 
-		tmpErrs.Errors = append(tmpErrs.Errors, Error{
+		tmpErr := Error{
 			Code:    err.Code,
 			Message: msg,
 			Detail:  err.Detail,
-		})
+		}
+
+		// if the detail contains error extract the error message
+		// otherwise json.Marshal will not serialize it at all
+		// https://github.com/golang/go/issues/10748
+		if detail, ok := tmpErr.Detail.(error); ok {
+			tmpErr.Detail = detail.Error()
+		}
+
+		tmpErrs.Errors = append(tmpErrs.Errors, tmpErr)
 	}
 
 	return json.Marshal(tmpErrs)
diff --git a/registry/storage/cache/memory/memory.go b/registry/storage/cache/memory/memory.go
index 8097939f7..f83894bf5 100644
--- a/registry/storage/cache/memory/memory.go
+++ b/registry/storage/cache/memory/memory.go
@@ -47,6 +47,12 @@ func NewInMemoryBlobDescriptorCacheProvider(size int) cache.BlobDescriptorCacheP
 
 func (imbdcp *inMemoryBlobDescriptorCacheProvider) RepositoryScoped(repo string) (distribution.BlobDescriptorService, error) {
 	if _, err := reference.ParseNormalizedNamed(repo); err != nil {
+		if err == reference.ErrNameTooLong {
+			return nil, distribution.ErrRepositoryNameInvalid{
+				Name:   repo,
+				Reason: reference.ErrNameTooLong,
+			}
+		}
 		return nil, err
 	}
 
diff --git a/registry/storage/cache/redis/redis.go b/registry/storage/cache/redis/redis.go
index 87ec43e3f..d2596b7bc 100644
--- a/registry/storage/cache/redis/redis.go
+++ b/registry/storage/cache/redis/redis.go
@@ -50,6 +50,12 @@ func NewRedisBlobDescriptorCacheProvider(pool *redis.Client) cache.BlobDescripto
 // RepositoryScoped returns the scoped cache.
 func (rbds *redisBlobDescriptorService) RepositoryScoped(repo string) (distribution.BlobDescriptorService, error) {
 	if _, err := reference.ParseNormalizedNamed(repo); err != nil {
+		if err == reference.ErrNameTooLong {
+			return nil, distribution.ErrRepositoryNameInvalid{
+				Name:   repo,
+				Reason: reference.ErrNameTooLong,
+			}
+		}
 		return nil, err
 	}