diff --git a/internal/monitoring/monitor_docker_test.go b/internal/monitoring/monitor_docker_test.go
index 33547e213..575c58567 100644
--- a/internal/monitoring/monitor_docker_test.go
+++ b/internal/monitoring/monitor_docker_test.go
@@ -13,7 +13,7 @@ import (
 func newTestMonitor(t *testing.T) *Monitor {
 	t.Helper()
 
-	return &Monitor{
+	m := &Monitor{
 		state:                  models.NewState(),
 		alertManager:           alerts.NewManager(),
 		removedDockerHosts:     make(map[string]time.Time),
@@ -21,6 +21,8 @@ func newTestMonitor(t *testing.T) *Monitor {
 		dockerTokenBindings:    make(map[string]string),
 		dockerMetadataStore:    config.NewDockerMetadataStore(t.TempDir()),
 	}
+	t.Cleanup(func() { m.alertManager.Stop() })
+	return m
 }
 
 func TestApplyDockerReportGeneratesUniqueIDsForCollidingHosts(t *testing.T) {
diff --git a/internal/monitoring/monitor_memory_test.go b/internal/monitoring/monitor_memory_test.go
index d3a850aa3..c610640a9 100644
--- a/internal/monitoring/monitor_memory_test.go
+++ b/internal/monitoring/monitor_memory_test.go
@@ -191,6 +191,7 @@ func TestPollPVEInstanceUsesRRDMemUsedFallback(t *testing.T) {
 		dlqInsightMap:        make(map[string]*dlqInsight),
 		authFailures:         make(map[string]int),
 		lastAuthAttempt:      make(map[string]time.Time),
+		nodeLastOnline:       make(map[string]time.Time),
 	}
 	defer mon.alertManager.Stop()
 	defer mon.notificationMgr.Stop()