diff --git a/datok_test.go b/datok_test.go
index 67617b2..8c2b894 100644
--- a/datok_test.go
+++ b/datok_test.go
@@ -75,6 +75,7 @@
 	var tokens []string
 	dat.Transduce(r, w)
 	tokens = strings.Split(w.String(), "\n")
+	assert.Equal(len(tokens), 10)
 	assert.Equal("wald", tokens[0])
 	assert.Equal("gehen", tokens[1])
 	assert.Equal("Da", tokens[2])