diff --git a/reader.go b/reader.go
index c52dedc..6bc4d47 100644
--- a/reader.go
+++ b/reader.go
@@ -65,7 +65,7 @@ func FromBytes(buffer []byte) (*Reader, error) {
 		return nil, err
 	}
 
-	searchTreeSize := metadata.NodeCount * metadata.RecordSize / 4
+	searchTreeSize := metadata.NodeCount * (metadata.RecordSize / 4)
 	dataSectionStart := searchTreeSize + dataSectionSeparatorSize
 	dataSectionEnd := uint(metadataStart - len(metadataStartMarker))
 	if dataSectionStart > dataSectionEnd {
diff --git a/reader_test.go b/reader_test.go
index 496437a..dab06c1 100644
--- a/reader_test.go
+++ b/reader_test.go
@@ -823,7 +823,7 @@ func BenchmarkOpen(b *testing.B) {
 	for i := 0; i < b.N; i++ {
 		db, err = Open("GeoLite2-City.mmdb")
 		if err != nil {
-			b.Error(err)
+			b.Fatal(err)
 		}
 	}
 	assert.NotNil(b, db)