diff --git a/source/Ox.UI/js/Form/Ox.Filter.js b/source/Ox.UI/js/Form/Ox.Filter.js
index d7ae2e04..f786a9ca 100644
--- a/source/Ox.UI/js/Form/Ox.Filter.js
+++ b/source/Ox.UI/js/Form/Ox.Filter.js
@@ -275,7 +275,9 @@ Ox.Filter = function(options, self) {
             self.options.query.conditions[pos].conditions.splice(subpos, 0, condition);
         }
         renderConditions();
-        triggerChangeEvent();
+        if (!isUselessCondition(pos, subpos)) {
+            triggerChangeEvent();
+        }
     }
 
     function changeConditionKey(pos, subpos, key) {
@@ -346,16 +348,37 @@ Ox.Filter = function(options, self) {
         return type;
     }
 
-    function removeCondition(pos, subpos) {
-        Ox.print('removeCondition', pos, subpos)
+    function isUselessCondition(pos, subpos) {
         subpos = Ox.isUndefined(subpos) ? -1 : subpos;
+        var conditions = subpos == -1
+                ? self.options.query.conditions[pos].conditions
+                    || [self.options.query.conditions[pos]]
+                : [self.options.query.conditions[pos].conditions[subpos]],
+            isUseless = false;
+        Ox.forEach(conditions, function(condition) {
+            isUseless = Ox.getObjectById(
+                    self.options.findKeys, condition.key
+                ).type == 'text'
+                && condition.operator == (self.options.query.operator == '&' ? '' : '!')
+                && condition.value == ''
+            return isUseless;
+        });
+        Ox.print('isUseless', isUseless);
+        return isUseless;
+    }
+
+    function removeCondition(pos, subpos) {
+        subpos = Ox.isUndefined(subpos) ? -1 : subpos;
+        var wasUselessCondition = isUselessCondition(pos, subpos);
         if (subpos == -1 || self.options.query.conditions[pos].conditions.length == 1) {
             self.options.query.conditions.splice(pos, 1);
         } else {
             self.options.query.conditions[pos].conditions.splice(subpos, 1);
         }
         renderConditions();
-        triggerChangeEvent();
+        if (!wasUselessCondition) {
+            triggerChangeEvent();
+        }
     }
 
     function renderButtons(pos, subpos) {