diff --git a/CHANGELOG.md b/CHANGELOG.md
index a625bc250..2a59c1198 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 ## Current Master
 
 - [#317](https://github.com/poanetwork/nifty-wallet/pull/317) - Fix path to derive accounts in HD wallets for RSK, ETC
+- [#318](https://github.com/poanetwork/nifty-wallet/pull/318) - (Fix) pasting of ABI for contract type account
 
 ## 4.11.10 Tue Feb 04 2020
 
diff --git a/old-ui/app/accounts/import/contract.js b/old-ui/app/accounts/import/contract.js
index 906984b1f..0e84fa7e9 100644
--- a/old-ui/app/accounts/import/contract.js
+++ b/old-ui/app/accounts/import/contract.js
@@ -41,13 +41,13 @@ class ContractImportView extends Component {
     })
   }
 
-  abiOnChange (abi) {
+  abiOnChange (abi, APIInputDisabled) {
     this.props.hideWarning()
     try {
       if (abi) {
         this.setState({
-          abi: JSON.stringify(abi),
-          abiInputDisabled: true,
+          abi: abi,
+          abiInputDisabled: APIInputDisabled || false,
           importDisabled: false,
         })
       }
@@ -124,7 +124,15 @@ class ContractImportView extends Component {
       return
     }
     getFullABI(web3.eth, contractAddr, network, type)
-      .then(finalABI => this.abiOnChange(finalABI))
+      .then(finalABI => {
+        if (finalABI) {
+          finalABI = JSON.stringify(finalABI)
+          const APIInputDisabled = true
+          return this.abiOnChange(finalABI, APIInputDisabled)
+        } else {
+          return null
+        }
+      })
       .catch(e => {
         this.clearAbi()
         log.debug(e)
diff --git a/old-ui/app/components/send/send-contract.js b/old-ui/app/components/send/send-contract.js
index 36c1f715e..285ce8719 100644
--- a/old-ui/app/components/send/send-contract.js
+++ b/old-ui/app/components/send/send-contract.js
@@ -161,9 +161,10 @@ class SendTransactionScreen extends PersistentForm {
 						options={this.state.options}
 						style={{ marginBottom: '10px' }}
 						onChange={(opt) => {
+							const isConstantMethod = opt.metadata && (opt.metadata.constant || opt.metadata.stateMutability === 'view')
 							this.setState({
 								methodSelected: opt.value,
-								isConstantMethod: opt.metadata.constant,
+								isConstantMethod: isConstantMethod,
 								methodABI: opt.metadata,
 								outputValues: {},
 								inputValues: {},