diff --git a/lib/OpenLayers/Control/Split.js b/lib/OpenLayers/Control/Split.js
index 69c035e672..64a159ad29 100644
--- a/lib/OpenLayers/Control/Split.js
+++ b/lib/OpenLayers/Control/Split.js
@@ -277,8 +277,7 @@ OpenLayers.Control.Split = OpenLayers.Class(OpenLayers.Control, {
     afterFeatureModified: function(event) {
         if(event.modified) {
             var feature = event.feature;
-            if(feature.geometry instanceof OpenLayers.Geometry.LineString ||
-               (OpenLayers.Geometry.MultiLineString && feature.geometry instanceof OpenLayers.Geometry.MultiLineString)) {
+            if (typeof feature.geometry.split === "function") {
                 this.feature = event.feature;
                 this.considerSplit(event.feature);
             }
@@ -315,9 +314,7 @@ OpenLayers.Control.Split = OpenLayers.Class(OpenLayers.Control, {
     isEligible: function(target) {
         return (
             target.state !== OpenLayers.State.DELETE
-        ) && (
-            target.geometry instanceof OpenLayers.Geometry.LineString ||
-            (OpenLayers.Geometry.MultiLineString && target.geometry instanceof OpenLayers.Geometry.MultiLineString)
+        ) && (typeof target.geometry.split === "function"
         ) && (
             this.feature !== target
         ) && (