diff --git a/db_test.go b/db_test.go
index 53802b2..7ba5ce8 100644
--- a/db_test.go
+++ b/db_test.go
@@ -94,23 +94,30 @@ func TestOpen_Size(t *testing.T) {
 	defer db.Close()
 
 	// Insert until we get above the minimum 4MB size.
-	db.Update(func(tx *bolt.Tx) error {
+	ok(t, db.Update(func(tx *bolt.Tx) error {
 		b, _ := tx.CreateBucketIfNotExists([]byte("data"))
 		for i := 0; i < 10000; i++ {
-			_ = b.Put([]byte(fmt.Sprintf("%04d", i)), make([]byte, 1000))
+			ok(t, b.Put([]byte(fmt.Sprintf("%04d", i)), make([]byte, 1000)))
 		}
 		return nil
-	})
+	}))
 
 	// Close database and grab the size.
 	db.DB.Close()
 	sz := fileSize(path)
+	if sz == 0 {
+		t.Fatalf("unexpected new file size: %d", sz)
+	}
 
 	// Reopen database, update, and check size again.
-	db0, _ := bolt.Open(path, 0666, nil)
-	db0.Update(func(tx *bolt.Tx) error { return tx.Bucket([]byte("data")).Put([]byte{0}, []byte{0}) })
-	db0.Close()
+	db0, err := bolt.Open(path, 0666, nil)
+	ok(t, err)
+	ok(t, db0.Update(func(tx *bolt.Tx) error { return tx.Bucket([]byte("data")).Put([]byte{0}, []byte{0}) }))
+	ok(t, db0.Close())
 	newSz := fileSize(path)
+	if newSz == 0 {
+		t.Fatalf("unexpected new file size: %d", newSz)
+	}
 
 	// Compare the original size with the new size.
 	if sz != newSz {