diff --git a/js/id/actions/reverse_way.js b/js/id/actions/reverse_way.js
index 37ac53f10..a845fe844 100644
--- a/js/id/actions/reverse_way.js
+++ b/js/id/actions/reverse_way.js
@@ -65,7 +65,7 @@ iD.actions.ReverseWay = function(wayId) {
         graph.parentRelations(way).forEach(function (relation) {
             relation.members.forEach(function (member, index) {
                 if (member.id === way.id && (role = {forward: 'backward', backward: 'forward'}[member.role])) {
-                    graph = iD.actions.UpdateRelationMember(relation.id, index, {role: role})(graph);
+                    graph = iD.actions.UpdateRelationMember(relation.id, {role: role}, index)(graph);
                 }
             });
         });
diff --git a/js/id/actions/split_way.js b/js/id/actions/split_way.js
index dda0c23a0..9f33bdf73 100644
--- a/js/id/actions/split_way.js
+++ b/js/id/actions/split_way.js
@@ -28,11 +28,12 @@ iD.actions.SplitWay = function(nodeId, newWayId) {
 
         graph.parentRelations(way).forEach(function(relation) {
             if (relation.isRestriction()) {
-                var via    = relation.memberByRole('via'),
-                    member = relation.memberById(way.id);
-
+                var via = relation.memberByRole('via');
                 if (via && newWay.contains(via.id)) {
-                    graph = iD.actions.UpdateRelationMember(relation.id, member.index, {id: newWay.id})(graph);
+                    graph = iD.actions.UpdateRelationMember(
+                        relation.id,
+                        {id: newWay.id},
+                        relation.memberById(way.id).index)(graph);
                 }
             }
         });
diff --git a/js/id/actions/update_relation_member.js b/js/id/actions/update_relation_member.js
index 67a45b6ab..29eb79afe 100644
--- a/js/id/actions/update_relation_member.js
+++ b/js/id/actions/update_relation_member.js
@@ -1,4 +1,4 @@
-iD.actions.UpdateRelationMember = function(relationId, index, properties) {
+iD.actions.UpdateRelationMember = function(relationId, properties, index) {
     return function(graph) {
         var relation = graph.entity(relationId),
             members = relation.members.slice();
diff --git a/test/spec/actions/update_relation_member.js b/test/spec/actions/update_relation_member.js
index 1878ff923..c85d72b34 100644
--- a/test/spec/actions/update_relation_member.js
+++ b/test/spec/actions/update_relation_member.js
@@ -2,7 +2,7 @@ describe("iD.actions.UpdateRelationMember", function () {
     it("updates the properties of the relation member at the specified index", function () {
         var node     = iD.Node(),
             relation = iD.Relation({members: [{id: node.id, role: 'forward'}]}),
-            graph    = iD.actions.UpdateRelationMember(relation.id, 0, {role: 'backward'})(iD.Graph([node, relation]));
+            graph    = iD.actions.UpdateRelationMember(relation.id, {role: 'backward'}, 0)(iD.Graph([node, relation]));
         expect(graph.entity(relation.id).members).to.eql([{id: node.id, role: 'backward'}]);
     });
 });