diff --git a/evm/evm-processor/src/interfaces/data.ts b/evm/evm-processor/src/interfaces/data.ts
index 4b5a6a6a..3aaa509e 100644
--- a/evm/evm-processor/src/interfaces/data.ts
+++ b/evm/evm-processor/src/interfaces/data.ts
@@ -86,9 +86,10 @@ type ExcludeUndefined<T> = {
 
 
 type MergeDefault<T, D> = Simplify<
-    undefined extends T ? D : Omit<D, keyof ExcludeUndefined<T>> & ExcludeUndefined<T>
->
-
+    T extends Object
+        ? Omit<D, keyof ExcludeUndefined<T>> & T
+        : D
+>;
 
 type TrueFields<F> = keyof {
     [K in keyof F as true extends F[K] ? K : never]: true