1 files changed, 5 insertions, 5 deletions
diff --git a/packages/types/src/index.ts b/packages/types/src/index.ts
index 70665a123..fa7d91347 100644
--- a/packages/types/src/index.ts
+++ b/packages/types/src/index.ts
@@ -152,18 +152,18 @@ export interface ECSignature {
 }
 
 export enum AssetProxyId {
-    INVALID,
-    ERC20,
-    ERC721,
+    INVALID = '0x00000000',
+    ERC20 = '0xf47261b0',
+    ERC721 = '0x08e937fa',
 }
 
 export interface ERC20AssetData {
-    assetProxyId: AssetProxyId;
+    assetProxyId: string;
     tokenAddress: string;
 }
 
 export interface ERC721AssetData {
-    assetProxyId: AssetProxyId;
+    assetProxyId: string;
     tokenAddress: string;
     tokenId: BigNumber;
     receiverData: string;