diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4e248eadf..669a7dba6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1 +1,2 @@
+- Fix bug where wrapInit wasn't called on v2 callable functions. (#1634)
 - Add support for callable function to return streaming response (#1629)
diff --git a/src/v2/providers/https.ts b/src/v2/providers/https.ts
index b21c04ba1..0c5fd2ba0 100644
--- a/src/v2/providers/https.ts
+++ b/src/v2/providers/https.ts
@@ -392,7 +392,7 @@ export function onCall<T = any, Return = any | Promise<any>>(
     "gcfv2"
   );
 
-  func = wrapTraceContext(func);
+  func = wrapTraceContext(withInit(func));
 
   Object.defineProperty(func, "__trigger", {
     get: () => {