diff --git a/src/jquery.maskedinput.js b/src/jquery.maskedinput.js
index 9b38bd9..8adcc4f 100644
--- a/src/jquery.maskedinput.js
+++ b/src/jquery.maskedinput.js
@@ -199,7 +199,7 @@ $.fn.extend({
             function androidInputEvent(e) {
                 var curVal = input.val();
                 var pos = input.caret();
-                if (curVal.length < oldVal.length) {
+                if (oldVal && oldVal.length && oldVal.length > curVal.length ) {
                     // a deletion or backspace happened
                     checkVal(true);
                     while (pos.begin > 0 && !tests[pos.begin-1])