diff --git a/doric-js/src/runtime/sandbox.es5.ts b/doric-js/src/runtime/sandbox.es5.ts
index ad284320..35ba1347 100644
--- a/doric-js/src/runtime/sandbox.es5.ts
+++ b/doric-js/src/runtime/sandbox.es5.ts
@@ -278,7 +278,7 @@ export function jsObtainEntry(contextId: string) {
 }
 
 const global = Function('return this')()
-let __timerId__ = 0
+let __timerId__ = 1
 
 const timerInfos: Map<number, { callback: () => void, context?: Context }> = new Map
 
diff --git a/doric-js/src/runtime/sandbox.ts b/doric-js/src/runtime/sandbox.ts
index d4cc7ef2..74e5b22b 100644
--- a/doric-js/src/runtime/sandbox.ts
+++ b/doric-js/src/runtime/sandbox.ts
@@ -316,7 +316,7 @@ export function jsObtainEntry(contextId: string) {
 }
 
 const global = Function('return this')()
-let __timerId__ = 0
+let __timerId__ = 1
 
 const timerInfos: Map<number, { callback: () => void, context?: Context }> = new Map