diff --git a/src/ng/directive/input.js b/src/ng/directive/input.js
index e59ae067582d..8ef496ddda4b 100644
--- a/src/ng/directive/input.js
+++ b/src/ng/directive/input.js
@@ -1241,7 +1241,7 @@ function numberInputType(scope, element, attr, ctrl, $sniffer, $browser) {
 
   ctrl.$formatters.push(function(value) {
     if (!ctrl.$isEmpty(value)) {
-      if (!isNumber(value)) {
+      if (isNaN(parseFloat(value)) || !isFinite(value)) {
         throw $ngModelMinErr('numfmt', 'Expected `{0}` to be a number', value);
       }
       value = value.toString();