diff --git a/src/components/state-history-charts.html b/src/components/state-history-charts.html
index 365652bb6b..ebb4421290 100644
--- a/src/components/state-history-charts.html
+++ b/src/components/state-history-charts.html
@@ -58,7 +58,7 @@ class StateHistoryCharts extends Polymer.Element {
         value: null,
       },
 
-      isLoading: Boolean,
+      isLoadingData: Boolean,
 
       endTime: {
         type: Object,