diff --git a/common/changes/@subsquid/evm-processor/evm-default-trace-input_2024-07-22-11-20.json b/common/changes/@subsquid/evm-processor/evm-default-trace-input_2024-07-22-11-20.json
new file mode 100644
index 000000000..d14e78c74
--- /dev/null
+++ b/common/changes/@subsquid/evm-processor/evm-default-trace-input_2024-07-22-11-20.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@subsquid/evm-processor",
+      "comment": "make `DebugFrame.input` optional and add default value",
+      "type": "patch"
+    }
+  ],
+  "packageName": "@subsquid/evm-processor"
+}
\ No newline at end of file
diff --git a/evm/evm-processor/src/ds-rpc/rpc-data.ts b/evm/evm-processor/src/ds-rpc/rpc-data.ts
index 7e7f315a0..db588e22c 100644
--- a/evm/evm-processor/src/ds-rpc/rpc-data.ts
+++ b/evm/evm-processor/src/ds-rpc/rpc-data.ts
@@ -13,7 +13,8 @@ import {
     ref,
     SMALL_QTY,
     STRING,
-    Validator
+    Validator,
+    withDefault
 } from '@subsquid/util-internal-validation'
 import {Bytes, Bytes20, Bytes32, Qty} from '../interfaces/base'
 import {project} from '../mapping/schema'
@@ -109,14 +110,14 @@ export type TransactionReceipt = GetSrcType<typeof TransactionReceipt>
 
 export const DebugFrame: Validator<DebugFrame> = object({
     type: STRING,
-    input: BYTES,
+    input: withDefault('0x', BYTES),
     calls: option(array(ref(() => DebugFrame)))
 })
 
 
 export interface DebugFrame {
     type: string
-    input: Bytes
+    input?: Bytes | null
     calls?: DebugFrame[] | null
 }