diff --git a/ui/src/Components/Grid/AlertGrid/index.js b/ui/src/Components/Grid/AlertGrid/index.js
index fb671605a..51b80c94e 100644
--- a/ui/src/Components/Grid/AlertGrid/index.js
+++ b/ui/src/Components/Grid/AlertGrid/index.js
@@ -102,7 +102,7 @@ const AlertGrid = observer(
                   key={id}
                   group={alertStore.data.groups[id]}
                   showAlertmanagers={
-                    alertStore.data.upstreams.instances.length > 1
+                    alertStore.data.upstreams.clusters.length > 1
                   }
                   afterUpdate={this.masonryRepack}
                   settingsStore={settingsStore}