diff --git a/pkg/alertmanager/multitenant_test.go b/pkg/alertmanager/multitenant_test.go
index d8af49e996..285914b99b 100644
--- a/pkg/alertmanager/multitenant_test.go
+++ b/pkg/alertmanager/multitenant_test.go
@@ -1817,7 +1817,14 @@ func TestAlertmanager_StateReplicationWithSharding_InitialSyncFromPeers(t *testi
 			{
 				metrics := registries.BuildMetricFamiliesPerUser()
 				assert.Equal(t, float64(1), metrics.GetSumOfGauges("cortex_alertmanager_silences"))
-				assert.Equal(t, float64(1), metrics.GetSumOfCounters("cortex_alertmanager_state_replication_total"))
+			}
+			// 2.c. Wait for the silence replication to be attempted; note this is asynchronous.
+			{
+				test.Poll(t, 5*time.Second, float64(1), func() interface{} {
+					metrics := registries.BuildMetricFamiliesPerUser()
+					return metrics.GetSumOfCounters("cortex_alertmanager_state_replication_total")
+				})
+				metrics := registries.BuildMetricFamiliesPerUser()
 				assert.Equal(t, float64(0), metrics.GetSumOfCounters("cortex_alertmanager_state_replication_failed_total"))
 			}