diff --git a/geom/geos/geos.go b/geom/geos/geos.go
index a3f9433..d033952 100644
--- a/geom/geos/geos.go
+++ b/geom/geos/geos.go
@@ -322,6 +322,7 @@ func (this *Geom) Bounds() Bounds {
 	if geom == nil {
 		return NilBounds
 	}
+	defer C.GEOSGeom_destroy(geom)
 	extRing := C.GEOSGetExteriorRing(geom)
 	if extRing == nil {
 		return NilBounds