diff --git a/src/ng/directive/input.js b/src/ng/directive/input.js
index c3294ed6547c..0dbb03207fe9 100644
--- a/src/ng/directive/input.js
+++ b/src/ng/directive/input.js
@@ -1125,7 +1125,11 @@ function baseInputType(scope, element, attr, ctrl, $sniffer, $browser) {
   element.on('change', listener);
 
   ctrl.$render = function() {
-    element.val(ctrl.$isEmpty(ctrl.$viewValue) ? '' : ctrl.$viewValue);
+    // Workaround for Firefox validation #12102.
+    var value = ctrl.$isEmpty(ctrl.$viewValue) ? '' : ctrl.$viewValue;
+    if (element.val() !== value) {
+      element.val(value);
+    }
   };
 }