diff --git a/CHANGELOG.md b/CHANGELOG.md
index e321a06e76a..28fef812efd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -54,6 +54,7 @@ due to too many connections/file handles on the data source backend. This proble
 * **Singlestat**: Support repeated template variables in prefix/postfix [#6595](https://github.com/grafana/grafana/issues/6595)
 * **Templating**: Don't persist variable options with refresh option [#6586](https://github.com/grafana/grafana/issues/6586)
 * **Alerting**: Add ability to have OR conditions (and mixing AND & OR) [#6579](https://github.com/grafana/grafana/issues/6579)
+* **InfluxDB**: Fix for Ad-Hoc Filters variable & changing dashboards [#6821](https://github.com/grafana/grafana/issues/6821)
 
 # 4.0-beta1 (2016-11-09)
 
diff --git a/public/app/features/dashboard/unsavedChangesSrv.js b/public/app/features/dashboard/unsavedChangesSrv.js
index 841aa4d1ddd..5ce3661100b 100644
--- a/public/app/features/dashboard/unsavedChangesSrv.js
+++ b/public/app/features/dashboard/unsavedChangesSrv.js
@@ -110,6 +110,7 @@ function(angular, _) {
       _.each(dash.templating.list, function(value) {
         value.current = null;
         value.options = null;
+        value.filters = null;
       });
     };
 
diff --git a/public/app/features/templating/templateSrv.js b/public/app/features/templating/templateSrv.js
index e4627ac6165..f2aa317351c 100644
--- a/public/app/features/templating/templateSrv.js
+++ b/public/app/features/templating/templateSrv.js
@@ -25,6 +25,7 @@ function (angular, _, kbn) {
     this.updateTemplateData = function() {
       this._index = {};
       this._filters = {};
+      this._adhocVariables = {};
 
       for (var i = 0; i < this.variables.length; i++) {
         var variable = this.variables[i];