diff --git a/packages/relayer/cmd/flags/common.go b/packages/relayer/cmd/flags/common.go
index b98443d4702..2bb7d15fcca 100644
--- a/packages/relayer/cmd/flags/common.go
+++ b/packages/relayer/cmd/flags/common.go
@@ -128,16 +128,6 @@ var (
 	}
 )
 
-// optional
-var (
-	CORSOrigins = &cli.StringFlag{
-		Name:     "http.corsOrigins",
-		Usage:    "Comma-delinated list of cors origins",
-		Required: false,
-		Category: commonCategory,
-	}
-)
-
 // All common flags.
 var CommonFlags = []cli.Flag{
 	// required
diff --git a/packages/relayer/cmd/flags/indexer.go b/packages/relayer/cmd/flags/indexer.go
index f4c6c1540be..26cfd7cfd2f 100644
--- a/packages/relayer/cmd/flags/indexer.go
+++ b/packages/relayer/cmd/flags/indexer.go
@@ -68,6 +68,13 @@ var (
 		Value:    4102,
 		EnvVars:  []string{"HTTP_PORT"},
 	}
+	CORSOrigins = &cli.StringFlag{
+		Name:     "http.corsOrigins",
+		Usage:    "Comma-delinated list of cors origins",
+		Required: false,
+		Value:    "*",
+		Category: commonCategory,
+	}
 )
 
 var IndexerFlags = MergeFlags(CommonFlags, []cli.Flag{
@@ -80,4 +87,5 @@ var IndexerFlags = MergeFlags(CommonFlags, []cli.Flag{
 	SubscriptionBackoff,
 	SyncMode,
 	WatchMode,
+	CORSOrigins,
 })
diff --git a/packages/relayer/indexer/config_test.go b/packages/relayer/indexer/config_test.go
index 610e2bce514..5956bca61bf 100644
--- a/packages/relayer/indexer/config_test.go
+++ b/packages/relayer/indexer/config_test.go
@@ -47,6 +47,7 @@ func TestNewConfigFromCliContext(t *testing.T) {
 		assert.Equal(t, common.HexToAddress(destBridgeAddr), c.DestBridgeAddress)
 		assert.Equal(t, common.HexToAddress(srcBridgeAddr), c.SrcBridgeAddress)
 		assert.Equal(t, common.HexToAddress(srcTaikoAddr), c.SrcTaikoAddress)
+		assert.Equal(t, []string{"*"}, c.CORSOrigins)
 
 		c.OpenDBFunc = func() (DB, error) {
 			return &mock.DB{}, nil
@@ -76,5 +77,6 @@ func TestNewConfigFromCliContext(t *testing.T) {
 		"-" + flags.DestBridgeAddress.Name, destBridgeAddr,
 		"-" + flags.SrcBridgeAddress.Name, srcBridgeAddr,
 		"-" + flags.SrcTaikoAddress.Name, srcTaikoAddr,
+		"-" + flags.CORSOrigins.Name, "*",
 	}))
 }