diff --git a/lib/forcegraph.js b/lib/forcegraph.js
index 3d06055..7fda8fb 100644
--- a/lib/forcegraph.js
+++ b/lib/forcegraph.js
@@ -60,6 +60,9 @@ define(["d3"], function (d3) {
       d3.event.sourceEvent.stopPropagation()
       d3.event.sourceEvent.preventDefault()
       draggedNode.fixed |= 2
+
+      draggedNode.px = draggedNode.x
+      draggedNode.py = draggedNode.y
     }
 
     function dragmove() {
@@ -76,7 +79,7 @@ define(["d3"], function (d3) {
       if (draggedNode) {
         d3.event.sourceEvent.stopPropagation()
         d3.event.sourceEvent.preventDefault()
-        draggedNode.fixed &= 1
+        draggedNode.fixed &= ~2
         draggedNode = undefined
       }
     }