diff --git a/src/Umbraco.Web/umbraco.presentation/umbraco/webservices/nodeSorter.asmx.cs b/src/Umbraco.Web/umbraco.presentation/umbraco/webservices/nodeSorter.asmx.cs
index 026d435936..e7603abe2e 100644
--- a/src/Umbraco.Web/umbraco.presentation/umbraco/webservices/nodeSorter.asmx.cs
+++ b/src/Umbraco.Web/umbraco.presentation/umbraco/webservices/nodeSorter.asmx.cs
@@ -175,9 +175,16 @@ namespace umbraco.presentation.webservices
         {
             var contentService = ApplicationContext.Services.ContentService;
             try
-            {
+            {
                 // Save content with new sort order and update db+cache accordingly
-                var sorted = contentService.Sort(ids);
+                var intIds = new List<int>();
+                foreach (var stringId in ids)
+                {
+                    int intId;
+                    if (int.TryParse(stringId, out intId))
+                        intIds.Add(intId);
+                }
+                var sorted = contentService.Sort(intIds.ToArray());
 
                 // refresh sort order on cached xml
                 // but no... this is not distributed - solely relying on content service & events should be enough