diff.go | 3 +++

diff --git a/diff.go b/diff.go
index 16dfbbcccf1d4c6a4f3670d19e44c575c8d6d9d7cb8dad67f1755e95506bee05..11b9f536d3a306503a9130bca7d5fa751ab29d86ad10986727393c59f5560c15 100644
--- a/diff.go
+++ b/diff.go
@@ -111,6 +111,9 @@ 		default:
 			log.Fatalln("bad zfs-diff format")
 		}
 	}
+	if err := scanner.Err(); err != nil {
+		log.Fatal(err)
+	}
 
 	entsReader := make(chan Ent, 1<<10)
 	db, err := os.Open(dbPath)