diff --git a/src/link.js b/src/link.js
index cd979f2..af7f53f 100644
--- a/src/link.js
+++ b/src/link.js
@@ -15,7 +15,7 @@ export default function() {
       nodes,
       stableVelocity = 0,
       stableVeloHandler = null,
-      latestVelocityDiff = 0
+      latestVelocityDiff = 0,
       iterations = 1;
 
   function force(alpha) {
@@ -95,7 +95,7 @@ export default function() {
   force.latestAccel = function () {
     return latestVelocityDiff;
   };
-  
+
   force.onStableVelo = function (_) {
     return arguments.length ? (stableVeloHandler = _, force) : stableVeloHandler;
   };
diff --git a/src/stress.js b/src/stress.js
index aa1a5bd..6d75880 100644
--- a/src/stress.js
+++ b/src/stress.js
@@ -7,7 +7,7 @@
 export function getStress(nodes, distance) {
   let sumDiffSq = 0
   let sumLowDDistSq = 0;
-  for (let j = nodes.length-1; j >= 1; j++) {
+  for (let j = nodes.length-1; j >= 1; j--) {
     for (let i = 0; i < j; i++) {
       let source = nodes[i], target = nodes[j];
       let lowDDist = Math.hypot(target.x - source.x, target.y - source.y);