diff --git a/docs/registry.go b/docs/registry.go
index fc2959a5..ba1626c1 100644
--- a/docs/registry.go
+++ b/docs/registry.go
@@ -188,8 +188,8 @@ func addRequiredHeadersToRedirectedRequests(req *http.Request, via []*http.Reque
 	return nil
 }
 
-func shouldV2Fallback(err errcode.Error) bool {
-	logrus.Debugf("v2 error: %T %v", err, err)
+// ShouldV2Fallback returns true if this error is a reason to fall back to v1.
+func ShouldV2Fallback(err errcode.Error) bool {
 	switch err.Code {
 	case errcode.ErrorCodeUnauthorized, v2.ErrorCodeManifestUnknown:
 		return true
@@ -220,7 +220,7 @@ func ContinueOnError(err error) bool {
 	case ErrNoSupport:
 		return ContinueOnError(v.Err)
 	case errcode.Error:
-		return shouldV2Fallback(v)
+		return ShouldV2Fallback(v)
 	case *client.UnexpectedHTTPResponseError:
 		return true
 	case error: