diff --git a/packages/app-store/fathom/zod.ts b/packages/app-store/fathom/zod.ts
index a9f8ba3d56..674bf3405d 100644
--- a/packages/app-store/fathom/zod.ts
+++ b/packages/app-store/fathom/zod.ts
@@ -4,7 +4,7 @@ import { eventTypeAppCardZod } from "../eventTypeAppCardZod";
 
 export const appDataSchema = eventTypeAppCardZod.merge(
   z.object({
-    trackingId: z.string(),
+    trackingId: z.string().default("").optional(),
   })
 );
 
diff --git a/packages/app-store/ga4/zod.ts b/packages/app-store/ga4/zod.ts
index a9f8ba3d56..674bf3405d 100644
--- a/packages/app-store/ga4/zod.ts
+++ b/packages/app-store/ga4/zod.ts
@@ -4,7 +4,7 @@ import { eventTypeAppCardZod } from "../eventTypeAppCardZod";
 
 export const appDataSchema = eventTypeAppCardZod.merge(
   z.object({
-    trackingId: z.string(),
+    trackingId: z.string().default("").optional(),
   })
 );
 
diff --git a/packages/app-store/plausible/zod.ts b/packages/app-store/plausible/zod.ts
index 05ffb12b4a..674bf3405d 100644
--- a/packages/app-store/plausible/zod.ts
+++ b/packages/app-store/plausible/zod.ts
@@ -4,9 +4,7 @@ import { eventTypeAppCardZod } from "../eventTypeAppCardZod";
 
 export const appDataSchema = eventTypeAppCardZod.merge(
   z.object({
-    // FIXME: Due to some reason autogenerated zod schema at prisma/zod/eventtype.ts fails typecheck on using `.default()`. It somehow thinks that trackingId can be undefined
-    // z.lazy has something to do with it. Figure it out later.
-    trackingId: z.string().default("") as unknown as z.ZodString,
+    trackingId: z.string().default("").optional(),
   })
 );