diff --git a/src/asses/one.go b/src/asses/one.go
index fdbae3d..373ad4f 100644
--- a/src/asses/one.go
+++ b/src/asses/one.go
@@ -30,16 +30,23 @@ func One(ctx context.Context, p string) error {
 	}
 
 	if err := func() error {
-		if cksum, err := Cksum(p); err != nil {
-			return err
-		} else if cksum == last.Cksum {
-			log.Printf("asses.One(%s) // cksum unchanged since %v", shortp, last.T)
-		} else {
-			log.Printf("asses.deport(%s)...", shortp)
-			if err := deport(ctx, p); err != nil {
+		if len(last.Cksum) > 0 {
+			cksum, err := Cksum(p)
+			if err != nil {
 				return err
 			}
+
+			if cksum == last.Cksum {
+				log.Printf("asses.One(%s) // cksum unchanged since %v", shortp, last.T)
+				return nil
+			}
 		}
+
+		log.Printf("asses.deport(%s)...", shortp)
+		if err := deport(ctx, p); err != nil {
+			return err
+		}
+
 		return nil
 	}(); err != nil {
 		return err