diff --git a/src/config/schema/fallback-models.ts b/src/config/schema/fallback-models.ts
index c2d8ae4d2..deca94d5f 100644
--- a/src/config/schema/fallback-models.ts
+++ b/src/config/schema/fallback-models.ts
@@ -17,9 +17,15 @@ export const FallbackModelObjectSchema = z.object({
 
 export type FallbackModelObject = z.infer<typeof FallbackModelObjectSchema>
 
+export const FallbackModelStringArraySchema = z.array(z.string())
+export const FallbackModelObjectArraySchema = z.array(FallbackModelObjectSchema)
+export const FallbackModelMixedArraySchema = z.array(z.union([z.string(), FallbackModelObjectSchema]))
+
 export const FallbackModelsSchema = z.union([
   z.string(),
-  z.array(z.union([z.string(), FallbackModelObjectSchema])),
+  FallbackModelStringArraySchema,
+  FallbackModelObjectArraySchema,
+  FallbackModelMixedArraySchema,
 ])
 
 export type FallbackModels = z.infer<typeof FallbackModelsSchema>