diff --git a/AlphaWallet/TokenScriptClient/Models/FunctionOrigin.swift b/AlphaWallet/TokenScriptClient/Models/FunctionOrigin.swift
index fcdc3f9860..d5ca46ca1c 100644
--- a/AlphaWallet/TokenScriptClient/Models/FunctionOrigin.swift
+++ b/AlphaWallet/TokenScriptClient/Models/FunctionOrigin.swift
@@ -147,8 +147,11 @@ struct FunctionOrigin {
         let resultSubscribable = Subscribable<AssetInternalValue>(nil)
         subscribable.subscribe { value in
             guard let value = value else { return }
-            guard let bitmask = self.bitmask else { return }
-            resultSubscribable.value = self.castReturnValue(value: value, bitmask: bitmask)
+            if let bitmask = self.bitmask {
+                resultSubscribable.value = self.castReturnValue(value: value, bitmask: bitmask)
+            } else {
+                resultSubscribable.value = value
+            }
         }
         return .subscribable(resultSubscribable)
     }
diff --git a/AlphaWallet/TokenScriptClient/Models/Origin.swift b/AlphaWallet/TokenScriptClient/Models/Origin.swift
index 6720962a26..d6e71175db 100644
--- a/AlphaWallet/TokenScriptClient/Models/Origin.swift
+++ b/AlphaWallet/TokenScriptClient/Models/Origin.swift
@@ -80,22 +80,21 @@ enum Origin {
     }
 
     init?(forTokenIdElement tokenIdElement: XMLElement, xmlContext: XmlContext) {
-        guard let bitmask = XMLHandler.getBitMask(fromTokenIdElement: tokenIdElement) else { return nil }
+        let bitmask = XMLHandler.getBitMask(fromTokenIdElement: tokenIdElement) ?? TokenScript.defaultBitmask
         guard let asType = tokenIdElement["as"].flatMap({ OriginAsType(rawValue: $0) }) else { return nil }
-
         let bitShift = Origin.bitShiftCount(forBitMask: bitmask)
         self = .tokenId(.init(originElement: tokenIdElement, xmlContext: xmlContext, bitmask: bitmask, bitShift: bitShift, asType: asType))
     }
 
     init?(forEthereumFunctionElement ethereumFunctionElement: XMLElement, attributeId: AttributeId, originContract: AlphaWallet.Address, xmlContext: XmlContext) {
-        guard let bitmask = XMLHandler.getBitMask(fromTokenIdElement: ethereumFunctionElement) else { return nil }
+        let bitmask = XMLHandler.getBitMask(fromTokenIdElement: ethereumFunctionElement) ?? TokenScript.defaultBitmask
         let bitShift = Origin.bitShiftCount(forBitMask: bitmask)
         guard let result = FunctionOrigin(forEthereumFunctionCallElement: ethereumFunctionElement, attributeId: attributeId, originContract: originContract, xmlContext: xmlContext, bitmask: bitmask, bitShift: bitShift) else { return nil }
         self = .function(result)
     }
 
     init?(forUserEntryElement userEntryElement: XMLElement, attributeId: AttributeId, xmlContext: XmlContext) {
-        guard let bitmask = XMLHandler.getBitMask(fromTokenIdElement: userEntryElement) else { return nil }
+        let bitmask = XMLHandler.getBitMask(fromTokenIdElement: userEntryElement) ?? TokenScript.defaultBitmask
         let bitShift = Origin.bitShiftCount(forBitMask: bitmask)
         guard let asType = userEntryElement["as"].flatMap({ OriginAsType(rawValue: $0) }) else { return nil }
         self = .userEntry(.init(originElement: userEntryElement, xmlContext: xmlContext, attributeId: attributeId, asType: asType, bitmask: bitmask, bitShift: bitShift))
diff --git a/AlphaWallet/TokenScriptClient/Models/TokenScript.swift b/AlphaWallet/TokenScriptClient/Models/TokenScript.swift
index 914a709586..6495c078f6 100644
--- a/AlphaWallet/TokenScriptClient/Models/TokenScript.swift
+++ b/AlphaWallet/TokenScriptClient/Models/TokenScript.swift
@@ -18,4 +18,5 @@ extension TokenScript {
     static let supportedTokenScriptNamespaceVersion = "2019/10"
     static let supportedTokenScriptNamespace = "\(tokenScriptNamespacePrefix)\(supportedTokenScriptNamespaceVersion)/tokenscript"
     static let indicesFileName = "indices"
+    static let defaultBitmask: BigUInt = BigUInt("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", radix: 16)!
 }