diff --git a/app/src/main/java/com/aurora/store/viewmodel/topchart/TopChartViewModel.kt b/app/src/main/java/com/aurora/store/viewmodel/topchart/TopChartViewModel.kt
index 4fc52da0d..2f0afecb0 100644
--- a/app/src/main/java/com/aurora/store/viewmodel/topchart/TopChartViewModel.kt
+++ b/app/src/main/java/com/aurora/store/viewmodel/topchart/TopChartViewModel.kt
@@ -91,7 +91,7 @@ class TopChartViewModel @Inject constructor(
             clusterAppList = streamCluster.clusterAppList + newCluster.clusterAppList
         )
 
-        stash[type] = mutableMapOf(chart to mergedCluster)
+        stash[type]?.set(chart, mergedCluster)
     }
 
     private fun targetCluster(