diff --git a/fs/filter/filter.go b/fs/filter/filter.go
index 0efd46aa7..ef2a21c3a 100644
--- a/fs/filter/filter.go
+++ b/fs/filter/filter.go
@@ -254,7 +254,7 @@ func (f *Filter) addDirGlobs(Include bool, glob string) error {
 		if dirGlob == "/" {
 			continue
 		}
-		dirRe, err := globToRegexp(dirGlob, f.Opt.IgnoreCase)
+		dirRe, err := GlobToRegexp(dirGlob, f.Opt.IgnoreCase)
 		if err != nil {
 			return err
 		}
@@ -274,7 +274,7 @@ func (f *Filter) Add(Include bool, glob string) error {
 	if strings.Contains(glob, "**") {
 		isDirRule, isFileRule = true, true
 	}
-	re, err := globToRegexp(glob, f.Opt.IgnoreCase)
+	re, err := GlobToRegexp(glob, f.Opt.IgnoreCase)
 	if err != nil {
 		return err
 	}
diff --git a/fs/filter/glob.go b/fs/filter/glob.go
index 96a48d3d4..f9198a886 100644
--- a/fs/filter/glob.go
+++ b/fs/filter/glob.go
@@ -10,10 +10,10 @@ import (
 	"github.com/pkg/errors"
 )
 
-// globToRegexp converts an rsync style glob to a regexp
+// GlobToRegexp converts an rsync style glob to a regexp
 //
 // documented in filtering.md
-func globToRegexp(glob string, ignoreCase bool) (*regexp.Regexp, error) {
+func GlobToRegexp(glob string, ignoreCase bool) (*regexp.Regexp, error) {
 	var re bytes.Buffer
 	if ignoreCase {
 		_, _ = re.WriteString("(?i)")
diff --git a/fs/filter/glob_test.go b/fs/filter/glob_test.go
index 008d4bfd3..351f93321 100644
--- a/fs/filter/glob_test.go
+++ b/fs/filter/glob_test.go
@@ -42,7 +42,7 @@ func TestGlobToRegexp(t *testing.T) {
 		{`a\\b`, `(^|/)a\\b$`, ``},
 	} {
 		for _, ignoreCase := range []bool{false, true} {
-			gotRe, err := globToRegexp(test.in, ignoreCase)
+			gotRe, err := GlobToRegexp(test.in, ignoreCase)
 			if test.error == "" {
 				prefix := ""
 				if ignoreCase {
@@ -102,7 +102,7 @@ func TestGlobToDirGlobs(t *testing.T) {
 		{"/sausage3**", []string{`/sausage3**/`, "/"}},
 		{"/a/*.jpg", []string{`/a/`, "/"}},
 	} {
-		_, err := globToRegexp(test.in, false)
+		_, err := GlobToRegexp(test.in, false)
 		assert.NoError(t, err)
 		got := globToDirGlobs(test.in)
 		assert.Equal(t, test.want, got, test.in)