diff --git a/pkg/db/db.go b/pkg/db/db.go
index 34288711b7a4..fddd3393ea70 100644
--- a/pkg/db/db.go
+++ b/pkg/db/db.go
@@ -80,6 +80,7 @@ func NewClient(cacheDir string, quiet bool, opts ...Option) *Client {
 	}
 
 	// Add the schema version as a tag if the tag doesn't exist.
+	// This is required for backward compatibility.
 	if !strings.Contains(o.dbRepository, ":") {
 		o.dbRepository = fmt.Sprintf("%s:%d", o.dbRepository, db.SchemaVersion)
 	}
diff --git a/pkg/javadb/client.go b/pkg/javadb/client.go
index 9b2a53d9209a..faa110a8460a 100644
--- a/pkg/javadb/client.go
+++ b/pkg/javadb/client.go
@@ -84,6 +84,7 @@ func (u *Updater) Update() error {
 
 func Init(cacheDir, javaDBRepository string, skip, quiet bool, registryOption ftypes.RegistryOptions) {
 	// Add the schema version as a tag if the tag doesn't exist.
+	// This is required for backward compatibility.
 	if !strings.Contains(javaDBRepository, ":") {
 		javaDBRepository = fmt.Sprintf("%s:%d", javaDBRepository, db.SchemaVersion)
 	}