diff --git a/infra/conf/trojan.go b/infra/conf/trojan.go
index d243e33a..4fe96c07 100644
--- a/infra/conf/trojan.go
+++ b/infra/conf/trojan.go
@@ -104,7 +104,7 @@ type TrojanUserConfig struct {
 // TrojanServerConfig is Inbound configuration
 type TrojanServerConfig struct {
 	Clients   []*TrojanUserConfig      `json:"clients"`
-	Fallback  json.RawMessage          `json:"fallback"`
+	Fallback  *TrojanInboundFallback   `json:"fallback"`
 	Fallbacks []*TrojanInboundFallback `json:"fallbacks"`
 }
 
diff --git a/infra/conf/vless.go b/infra/conf/vless.go
index 91233703..f5ded7a0 100644
--- a/infra/conf/vless.go
+++ b/infra/conf/vless.go
@@ -29,7 +29,7 @@ type VLessInboundFallback struct {
 type VLessInboundConfig struct {
 	Clients    []json.RawMessage       `json:"clients"`
 	Decryption string                  `json:"decryption"`
-	Fallback   json.RawMessage         `json:"fallback"`
+	Fallback   *VLessInboundFallback   `json:"fallback"`
 	Fallbacks  []*VLessInboundFallback `json:"fallbacks"`
 }