diff --git a/src/cache/cache.go b/src/cache/cache.go
index a6970f2..4c5a5bd 100644
--- a/src/cache/cache.go
+++ b/src/cache/cache.go
@@ -18,7 +18,7 @@ import (
 	"time"
 )
 
-var filepattern = regexp.MustCompile(`((In)?Release(.gpg)?|Packages.(gz|bz2))`)
+var filepattern = regexp.MustCompile(`((In)?Release(\.gpg)?|Packages\.(gz|bz2))`)
 
 // Reader is a generic interface for reading cache entries either from disk or
 // directly attached to a downloader.
@@ -144,7 +144,7 @@ func (c *Cache) Close() {
 	c.waitGroup.Wait()
 }
 
-// Migrate converts old files to newer format
+// Migrate make file migrations with older versions
 func (c *Cache) Migrate(pathname *string) (err error) {
 	files, err := os.ReadDir(*pathname)
 	for _, f := range files {