diff --git a/path.go b/path.go
index 0e62fb7..326bc92 100644
--- a/path.go
+++ b/path.go
@@ -12,9 +12,10 @@ type FS struct {
 	path string
 }
 
-// FileWriter is a writable version of fs.File. 
+// FileWriter is a writable version of fs.File.
 type FileWriter interface {
-	interface { fs.File; io.Writer }
+	fs.File
+	io.Writer
 }
 
 // ApplicationUserDataFS returns an FS that an application can use to store user
@@ -54,11 +55,11 @@ func appFs (root string, app ApplicationDescription) (*FS, error) {
 	appname = strings.ReplaceAll(appname, "\\", "-")
 
 	path := filepath.Join(root, appname)
-	
+
 	// ensure the directory actually exists
 	err := os.MkdirAll(path, 755)
 	if err != nil { return nil, err }
-	
+
 	return &FS { path: path }, nil
 }