1 files changed, 3 insertions, 1 deletions
diff --git a/src/ng/rootScope.js b/src/ng/rootScope.js
index ce0f8ad5..dbb93000 100644
--- a/src/ng/rootScope.js
+++ b/src/ng/rootScope.js
@@ -453,7 +453,9 @@ function $RootScopeProvider(){
             }
             // copy the items to oldValue and look for changes.
             for (var i = 0; i < newLength; i++) {
-              if (oldValue[i] !== newValue[i]) {
+              var bothNaN = (oldValue[i] !== oldValue[i]) &&
+                  (newValue[i] !== newValue[i]);
+              if (!bothNaN && (oldValue[i] !== newValue[i])) {
                 changeDetected++;
                 oldValue[i] = newValue[i];
               }