diff --git a/datalets/graph-datalet/graph-datalet.html b/datalets/graph-datalet/graph-datalet.html
index 4c9fbca..985fbcf 100755
--- a/datalets/graph-datalet/graph-datalet.html
+++ b/datalets/graph-datalet/graph-datalet.html
@@ -246,12 +246,12 @@ Example:
                                                                                                     return "fill:" + t.color + "; stroke:white"
                                                                                                 });
 
+                d3.selectAll(".drag").call(force.drag), this.svg.selectAll("g.node").call(this.text);
+
                 d3.selectAll('circle').attr("style", function(t){
-                    return  "fill :" + (t.image ? 'url(#image_' + t.id +')' : t.color)
+                    return  (t != undefined) ? "fill :" + (t.image ? 'url(#image_' + t.id +')' : t.color) : "";
                 });
 
-                d3.selectAll(".drag").call(force.drag), this.svg.selectAll("g.node").call(this.text);
-
             },
 
             zoom: function() {