diff --git a/format.go b/format.go
index bb65a12..48c770b 100644
--- a/format.go
+++ b/format.go
@@ -21,3 +21,6 @@ func ListFormatFunc(es []error) string {
 		"%d error(s) occurred:\n\n%s",
 		len(es), strings.Join(points, "\n"))
 }
+
+// DefaultErrorFormatFunc is global default ErrorFormatFunc
+var DefaultErrorFormatFunc ErrorFormatFunc = ListFormatFunc
diff --git a/multierror.go b/multierror.go
index 2ea0827..2f037e2 100644
--- a/multierror.go
+++ b/multierror.go
@@ -14,7 +14,7 @@ type Error struct {
 func (e *Error) Error() string {
 	fn := e.ErrorFormat
 	if fn == nil {
-		fn = ListFormatFunc
+		fn = DefaultErrorFormatFunc
 	}
 
 	return fn(e.Errors)