diff --git a/node/pkg/dal/collector/collector.go b/node/pkg/dal/collector/collector.go
index 86a88f6da..9f2680f33 100644
--- a/node/pkg/dal/collector/collector.go
+++ b/node/pkg/dal/collector/collector.go
@@ -32,7 +32,7 @@ type Collector struct {
 	FeedHashes      map[int32][]byte
 	CachedWhitelist []klaytncommon.Address
 
-	Ctx        context.Context
+	IsRunning  bool
 	CancelFunc context.CancelFunc
 
 	chainReader                 *websocketchainreader.ChainReader
@@ -83,14 +83,15 @@ func NewCollector(ctx context.Context, configs []types.Config) (*Collector, erro
 }
 
 func (c *Collector) Start(ctx context.Context) {
-	if c.Ctx != nil {
+	if c.IsRunning {
 		log.Warn().Str("Player", "DalCollector").Msg("Collector already running, skipping start")
 		return
 	}
+	c.IsRunning = true
 
 	ctxWithCancel, cancel := context.WithCancel(ctx)
 	c.CancelFunc = cancel
-	c.Ctx = ctxWithCancel
+	c.IsRunning = true
 
 	c.receive(ctxWithCancel)
 	c.trackOracleAdded(ctxWithCancel)
@@ -99,7 +100,7 @@ func (c *Collector) Start(ctx context.Context) {
 func (c *Collector) Stop() {
 	if c.CancelFunc != nil {
 		c.CancelFunc()
-		c.Ctx = nil
+		c.IsRunning = false
 	}
 }
 
diff --git a/node/pkg/dal/tests/api_test.go b/node/pkg/dal/tests/api_test.go
index 4adc0e9ae..9b596d3a4 100644
--- a/node/pkg/dal/tests/api_test.go
+++ b/node/pkg/dal/tests/api_test.go
@@ -28,11 +28,11 @@ func TestApiControllerRun(t *testing.T) {
 		}
 	}()
 
-	assert.Equal(t, nil, testItems.Controller.Collector.Ctx)
+	assert.False(t, testItems.Controller.Collector.IsRunning)
 
 	testItems.Controller.Start(ctx)
 	time.Sleep(10 * time.Millisecond)
-	assert.NotEqual(t, nil, testItems.Controller.Collector.Ctx)
+	assert.True(t, testItems.Controller.Collector.IsRunning)
 }
 
 func TestApiGetLatestAll(t *testing.T) {
diff --git a/node/pkg/dal/tests/collector_test.go b/node/pkg/dal/tests/collector_test.go
index 83ee71e8c..01060a7a2 100644
--- a/node/pkg/dal/tests/collector_test.go
+++ b/node/pkg/dal/tests/collector_test.go
@@ -24,12 +24,13 @@ func TestCollectorStartAndStop(t *testing.T) {
 
 	collector := testItems.Collector
 	collector.Start(ctx)
-	assert.NotEqual(t, nil, collector.Ctx)
+	assert.True(t, collector.IsRunning)
+
 	assert.Greater(t, len(collector.Symbols), 0)
 	assert.Greater(t, len(collector.Symbols), 0)
 
 	collector.Stop()
-	assert.Equal(t, nil, collector.Ctx)
+	assert.False(t, collector.IsRunning)
 }
 
 func TestCollectorStream(t *testing.T) {