diff --git a/packages/types/src/interfaces/parachains/definitions.ts b/packages/types/src/interfaces/parachains/definitions.ts
index fddfaa4429..e8f0210a96 100644
--- a/packages/types/src/interfaces/parachains/definitions.ts
+++ b/packages/types/src/interfaces/parachains/definitions.ts
@@ -13,7 +13,6 @@ import slotTypes from './slots';
 const proposeTypes = {
   ParachainProposal: {
     proposer: 'AccountId',
-    validationCode: 'ValidationCode',
     genesisHead: 'HeadData',
     validators: 'Vec<ValidatorId>',
     name: 'Bytes',