diff --git a/internal/prefixcollector/collector_configmap_output_test.go b/internal/prefixcollector/collector_configmap_output_test.go
index 39b58ce..8f4b569 100644
--- a/internal/prefixcollector/collector_configmap_output_test.go
+++ b/internal/prefixcollector/collector_configmap_output_test.go
@@ -56,14 +56,22 @@ const (
 
 type dummyPrefixSource struct {
 	prefixes []string
+	notify   chan<- struct{}
 }
 
 func (d *dummyPrefixSource) Prefixes() []string {
 	return d.prefixes
 }
 
-func newDummyPrefixSource(prefixes []string) *dummyPrefixSource {
-	return &dummyPrefixSource{prefixes}
+func (d *dummyPrefixSource) SendNotification() {
+	d.notify <- struct{}{}
+}
+
+func newDummyPrefixSource(prefixes []string, notify chan<- struct{}) *dummyPrefixSource {
+	return &dummyPrefixSource{
+		prefixes: prefixes,
+		notify:   notify,
+	}
 }
 
 type ExcludedPrefixesSuite struct {
@@ -94,6 +102,7 @@ func (eps *ExcludedPrefixesSuite) TestCollectorWithDummySources() {
 				"127.0.2.1/16",
 				"168.92.0.1/24",
 			},
+			notifyChan,
 		),
 		newDummyPrefixSource(
 			[]string{
@@ -101,6 +110,7 @@ func (eps *ExcludedPrefixesSuite) TestCollectorWithDummySources() {
 				"134.56.0.1/8",
 				"168.92.0.1/16",
 			},
+			notifyChan,
 		),
 	}
 
@@ -263,6 +273,7 @@ func (eps *ExcludedPrefixesSuite) TestAllSources() {
 				"127.0.2.1/16",
 				"168.92.0.1/24",
 			},
+			notifyChan,
 		),
 		prefixsource.NewKubeAdmPrefixSource(ctx, notifyChan),
 		prefixsource.NewConfigMapPrefixSource(
diff --git a/internal/prefixcollector/collector_file_output_test.go b/internal/prefixcollector/collector_file_output_test.go
index 4dff331..6874b05 100644
--- a/internal/prefixcollector/collector_file_output_test.go
+++ b/internal/prefixcollector/collector_file_output_test.go
@@ -25,6 +25,7 @@ import (
 	"context"
 	"os"
 	"path/filepath"
+	"sync/atomic"
 	"time"
 
 	"github.com/fsnotify/fsnotify"
@@ -61,6 +62,7 @@ func (eps *ExcludedPrefixesSuite) TestAllSourcesWithFileOutput() {
 				"127.0.2.1/16",
 				"168.92.0.1/24",
 			},
+			notifyChan,
 		),
 		prefixsource.NewKubeAdmPrefixSource(ctx, notifyChan),
 		prefixsource.NewConfigMapPrefixSource(
@@ -75,6 +77,40 @@ func (eps *ExcludedPrefixesSuite) TestAllSourcesWithFileOutput() {
 	eps.testCollectorWithFileOutput(ctx, notifyChan, expectedResult, sources)
 }
 
+func (eps *ExcludedPrefixesSuite) TestDummySourceWithSeveralNotifications() {
+	defer goleak.VerifyNone(eps.T(), goleak.IgnoreCurrent())
+	expectedResult := []string{
+		"127.0.0.0/16",
+		"168.92.0.0/24",
+	}
+
+	notificationCount := 5
+
+	notifyChan := make(chan struct{}, notificationCount)
+	ctx, cancel := context.WithCancel(prefixcollector.WithKubernetesInterface(context.Background(), eps.clientSet))
+	defer cancel()
+
+	eps.createConfigMap(ctx, prefixsource.KubeNamespace, kubeConfigMapPath)
+	eps.createConfigMap(ctx, configMapNamespace, configMapPath)
+
+	source := newDummyPrefixSource(
+		[]string{
+			"127.0.0.1/16",
+			"127.0.2.1/16",
+			"168.92.0.1/24",
+		},
+		notifyChan,
+	)
+
+	sources := []prefixcollector.PrefixSource{source}
+
+	for i := 0; i < notificationCount; i++ {
+		source.SendNotification()
+	}
+
+	eps.testCollectorWithFileOutput(ctx, notifyChan, expectedResult, sources)
+}
+
 func (eps *ExcludedPrefixesSuite) testCollectorWithFileOutput(ctx context.Context, notifyChan chan struct{},
 	expectedResult []string, sources []prefixcollector.PrefixSource) {
 	prefixesFilePath := filepath.Join(os.TempDir(), prefixesFileName)
@@ -90,7 +126,8 @@ func (eps *ExcludedPrefixesSuite) testCollectorWithFileOutput(ctx context.Contex
 	ctx, cancel := context.WithTimeout(ctx, time.Second)
 	defer cancel()
 
-	watcher, errCh := eps.watchFile(ctx, prefixesFilePath, len(sources))
+	var modified atomic.Int32
+	watcher, errCh := eps.watchFile(ctx, prefixesFilePath, &modified)
 
 	go collector.Serve(ctx)
 
@@ -112,14 +149,14 @@ func (eps *ExcludedPrefixesSuite) testCollectorWithFileOutput(ctx context.Contex
 		eps.T().Fatalf("Error transforming yaml to prefixes: %v", err)
 	}
 
+	eps.Require().LessOrEqual(int(modified.Load()), len(sources)*2)
 	eps.Require().ElementsMatch(expectedResult, prefixes)
 }
 
 func (eps *ExcludedPrefixesSuite) watchFile(ctx context.Context, prefixesFilePath string,
-	maxModifyCount int) (watcher *fsnotify.Watcher, errorCh chan error) {
+	modified *atomic.Int32) (watcher *fsnotify.Watcher, errorCh chan error) {
 	watcher, err := fsnotify.NewWatcher()
 	errorCh = make(chan error)
-	modifyCount := 0
 
 	if err != nil {
 		errorCh <- err
@@ -141,11 +178,7 @@ func (eps *ExcludedPrefixesSuite) watchFile(ctx context.Context, prefixesFilePat
 					return
 				}
 				if event.Op&fsnotify.Write == fsnotify.Write {
-					modifyCount++
-					if modifyCount == maxModifyCount {
-						close(errorCh)
-						return
-					}
+					modified.Add(1)
 				}
 			case watcherError, ok := <-watcher.Errors:
 				if !ok {