diff --git a/tailbone/static/js/tailbone.mobile.js b/tailbone/static/js/tailbone.mobile.js
index 6f94c2f6..0926a42e 100644
--- a/tailbone/static/js/tailbone.mobile.js
+++ b/tailbone/static/js/tailbone.mobile.js
@@ -111,23 +111,37 @@ $(document).on('click', '#receiving-quantity-keypad-thingy .keypad-button', func
     var quantity = $('.receiving-quantity');
     var value = quantity.text();
     var key = $(this).text();
+    var changed = $('#receiving-quantity-keypad-thingy').data('changed');
     if (key == 'Del') {
         if (value.length == 1) {
             quantity.text('0');
         } else {
             quantity.text(value.substring(0, value.length - 1));
         }
+        changed = true;
     } else if (key == '.') {
         if (value.indexOf('.') == -1) {
-            quantity.text(value + '.');
+            if (changed) {
+                quantity.text(value + '.');
+            } else {
+                quantity.text('0.');
+                changed = true;
+            }
         }
     } else {
         if (value == '0') {
             quantity.text(key);
-        } else {
+            changed = true;
+        } else if (changed) {
             quantity.text(value + key);
+        } else {
+            quantity.text(key);
+            changed = true;
         }
     }
+    if (changed) {
+        $('#receiving-quantity-keypad-thingy').data('changed', true);
+    }
 });
 
 
diff --git a/tailbone/templates/mobile/receiving/view_row.mako b/tailbone/templates/mobile/receiving/view_row.mako
index dd7440c5..75750726 100644
--- a/tailbone/templates/mobile/receiving/view_row.mako
+++ b/tailbone/templates/mobile/receiving/view_row.mako
@@ -38,7 +38,7 @@
   </tbody>
 </table>
 
-<table id="receiving-quantity-keypad-thingy">
+<table id="receiving-quantity-keypad-thingy" data-changed="false">
   <tbody>
     <tr>
       <td>${h.link_to("7", '#', class_='keypad-button ui-btn ui-btn-inline ui-corner-all')}</td>