diff --git a/pkg/downloader/cache.go b/pkg/downloader/cache.go
index c628ba95d..92d477e49 100644
--- a/pkg/downloader/cache.go
+++ b/pkg/downloader/cache.go
@@ -64,8 +64,8 @@ func (c *DiskCache) Get(key [sha256.Size]byte, cacheType string) (string, error)
 	if fi.IsDir() {
 		return p, errors.New("is a directory")
 	}
-	// Empty files treated as not exist because there is no content.
-	// IsDir must be checked first: some filesystems (e.g. overlay) report
+	// Empty files are treated as non-existent because there is no content.
+	// IsDir must be checked first: some filesystems (e.g. overlayfs) report
 	// directory size as 0.
 	if fi.Size() == 0 {
 		return p, os.ErrNotExist