diff --git a/datokenizer.go b/datokenizer.go
index 4409d98..e52c8c3 100644
--- a/datokenizer.go
+++ b/datokenizer.go
@@ -573,6 +573,19 @@
 	return base
 }
 
+func (dat *DaTokenizer) loadLevel() float64 {
+
+	nonEmpty := 0
+	all := len(dat.array) / 2
+	for x := 1; x <= len(dat.array); x = x + 2 {
+		if dat.array[x] != 0 {
+			nonEmpty++
+		}
+	}
+	fmt.Println("all:", all, "nonEmpty", nonEmpty)
+	return float64(nonEmpty) / float64(all) * 100
+}
+
 // Match an input string against the double array
 // FSA.
 //
diff --git a/datokenizer_test.go b/datokenizer_test.go
index f9c10cc..335c7ee 100644
--- a/datokenizer_test.go
+++ b/datokenizer_test.go
@@ -1,7 +1,6 @@
 package datokenizer
 
 import (
-	"fmt"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -45,7 +44,7 @@
 	assert := assert.New(t)
 	tok := ParseFile("testdata/tokenizer.fst")
 	dat := tok.ToDoubleArray()
-	fmt.Println("Size:", dat.maxSize)
+	assert.True(dat.loadLevel() >= 70)
 	assert.True(dat.Match("bau"))
 	assert.True(dat.Match("bad"))
 	assert.True(dat.Match("wald gehen"))