diff --git a/app/coffee/modules/controllerMixins.coffee b/app/coffee/modules/controllerMixins.coffee
index 588e7c4e..b7d1af25 100644
--- a/app/coffee/modules/controllerMixins.coffee
+++ b/app/coffee/modules/controllerMixins.coffee
@@ -55,7 +55,7 @@ class FiltersMixin
     selectFilter: (name, value, load=false) ->
         params = @location.search()
         if params[name] != undefined and name != "page"
-            existing = _.map(taiga.toString(params[name]).split(","), trim)
+            existing = _.map(taiga.toString(params[name]).split(","), (x) -> trim(x))
             existing.push(taiga.toString(value))
             existing = _.compact(existing)
             value = joinStr(",", _.uniq(existing))
@@ -76,7 +76,7 @@ class FiltersMixin
         if value is undefined or value is null
             delete params[name]
 
-        parsedValues = _.map(taiga.toString(params[name]).split(","), trim)
+        parsedValues = _.map(taiga.toString(params[name]).split(","), (x) -> trim(x))
         newValues = _.reject(parsedValues, (x) -> x == taiga.toString(value))
         newValues = _.compact(newValues)
 
diff --git a/app/coffee/modules/issues/list.coffee b/app/coffee/modules/issues/list.coffee
index 2cd87a9f..e520fd43 100644
--- a/app/coffee/modules/issues/list.coffee
+++ b/app/coffee/modules/issues/list.coffee
@@ -386,6 +386,11 @@ IssuesFiltersDirective = ($log, $location) ->
             filters = $scope.filters[type]
             filter = _.find(filters, {id:id})
             filter.selected = (not filter.selected)
+
+            # Convert id to null as string for properly
+            # put null value on url parameters
+            id = "null" if id is null
+
             if filter.selected
                 selectedFilters.push(filter)
                 $scope.$apply ->
@@ -433,7 +438,7 @@ IssuesFiltersDirective = ($log, $location) ->
             event.preventDefault()
             target = angular.element(event.currentTarget)
 
-            id = target.data("id")
+            id = target.data("id") or null
             type = target.data("type")
             toggleFilterSelection(type, id)
 
@@ -442,11 +447,10 @@ IssuesFiltersDirective = ($log, $location) ->
             target = angular.element(event.currentTarget)
             if target.hasClass("active")
                 target.removeClass("active")
-                # target.css("background-color")
             else
                 target.addClass("active")
 
-            id = target.data("id")
+            id = target.data("id") or null
             type = target.data("type")
             toggleFilterSelection(type, id)