diff --git a/geom/geos/geos_test.go b/geom/geos/geos_test.go
index 4eda80a..032af58 100644
--- a/geom/geos/geos_test.go
+++ b/geom/geos/geos_test.go
@@ -5,3 +5,21 @@ import "testing"
 func TestFoo(t *testing.T) {
 	_ = NewGEOS()
 }
+
+func BenchmarkWKB(b *testing.B) {
+	g := NewGEOS()
+	defer g.Finish()
+
+	for i := 0; i < b.N; i++ {
+		cs, _ := g.CreateCoordSeq(10, 2)
+		for i := 0; i < 10; i++ {
+			cs.SetXY(g, uint32(i), float64(i*10), 0)
+		}
+		geom, _ := cs.AsLineString(g)
+		if g.IsValid(geom) == false {
+			b.Fail()
+		}
+		g.AsWKB(geom)
+		g.Destroy(geom)
+	}
+}