diff --git a/dist/histogram.js b/dist/histogram.js
index 03bf7f7..b7fbbd4 100644
--- a/dist/histogram.js
+++ b/dist/histogram.js
@@ -288,8 +288,8 @@ System.register(['angular', 'jquery', 'moment', 'lodash', 'app/core/utils/kbn',
 
               var scopedVars = ctrl.panel.scopedVars;
               var bucketSize = !panel.bucketSize && panel.bucketSize !== 0 ? null : parseFloat(ctrl.templateSrv.replaceWithText(panel.bucketSize.toString(), scopedVars));
-              var minValue = !panel.minValue && panel.minValue !== 0 ? null : parseFloat(ctrl.templateSrv.replaceWithText(panel.minValue.toString(), scopedVars));
-              var maxValue = !panel.maxValue && panel.maxValue !== 0 ? null : parseFloat(ctrl.templateSrv.replaceWithText(panel.maxValue.toString(), scopedVars));
+              var minValue = !panel.minValue || panel.minValue === 0 ? null : parseFloat(ctrl.templateSrv.replaceWithText(panel.minValue.toString(), scopedVars));
+              var maxValue = !panel.maxValue || panel.maxValue === 0 ? null : parseFloat(ctrl.templateSrv.replaceWithText(panel.maxValue.toString(), scopedVars));
 
               switch (panel.bucketMode) {
                 case 'count':