diff --git a/ui/app/helpers/utils/transactions.util.js b/ui/app/helpers/utils/transactions.util.js
index d23c1777d0ef..99ccc3478ce7 100644
--- a/ui/app/helpers/utils/transactions.util.js
+++ b/ui/app/helpers/utils/transactions.util.js
@@ -192,7 +192,7 @@ export function getStatusKey (transaction) {
 }
 
 /**
- * An external block explorer url at which a transaction can be viewed.
+ * Returns an external block explorer URL at which a transaction can be viewed.
  * @param {number} networkId
  * @param {string} hash
  * @param {Object} rpcPrefs
diff --git a/ui/app/pages/settings/networks-tab/network-form/network-form.component.js b/ui/app/pages/settings/networks-tab/network-form/network-form.component.js
index bb739dea1722..5e455b65eb1d 100644
--- a/ui/app/pages/settings/networks-tab/network-form/network-form.component.js
+++ b/ui/app/pages/settings/networks-tab/network-form/network-form.component.js
@@ -6,19 +6,19 @@ import TextField from '../../../../components/ui/text-field'
 
 export default class NetworksTab extends PureComponent {
   static contextTypes = {
-    t: PropTypes.func,
-    metricsEvent: PropTypes.func,
+    t: PropTypes.func.isRequired,
+    metricsEvent: PropTypes.func.isRequired,
   }
 
   static propTypes = {
-    editRpc: PropTypes.func,
+    editRpc: PropTypes.func.isRequired,
     rpcUrl: PropTypes.string,
     chainId: PropTypes.string,
     ticker: PropTypes.string,
     viewOnly: PropTypes.bool,
     networkName: PropTypes.string,
-    onClear: PropTypes.func,
-    setRpcTarget: PropTypes.func,
+    onClear: PropTypes.func.isRequired,
+    setRpcTarget: PropTypes.func.isRequired,
     networksTabIsInAddMode: PropTypes.bool,
     blockExplorerUrl: PropTypes.string,
     rpcPrefs: PropTypes.object,
@@ -145,7 +145,7 @@ export default class NetworksTab extends PureComponent {
       this.setErrorTo(stateKey, '')
     } else {
       const appendedRpc = `http://${url}`
-      const validWhenAppended = validUrl.isWebUri(appendedRpc) && !url.match(/^https*:\/\/$/)
+      const validWhenAppended = validUrl.isWebUri(appendedRpc) && !url.match(/^https?:\/\/$/)
 
       this.setErrorTo(stateKey, this.context.t(validWhenAppended ? 'uriErrorMsg' : 'invalidRPC'))
     }
diff --git a/ui/app/pages/settings/networks-tab/networks-tab.component.js b/ui/app/pages/settings/networks-tab/networks-tab.component.js
index 6ba8dabbe198..2f921a892aaa 100644
--- a/ui/app/pages/settings/networks-tab/networks-tab.component.js
+++ b/ui/app/pages/settings/networks-tab/networks-tab.component.js
@@ -10,21 +10,21 @@ import NetworkDropdownIcon from '../../../components/app/dropdowns/components/ne
 
 export default class NetworksTab extends PureComponent {
   static contextTypes = {
-    t: PropTypes.func,
-    metricsEvent: PropTypes.func,
+    t: PropTypes.func.isRequired,
+    metricsEvent: PropTypes.func.isRequired,
   }
 
   static propTypes = {
-    editRpc: PropTypes.func,
-    history: PropTypes.object,
-    location: PropTypes.object,
+    editRpc: PropTypes.func.isRequired,
+    history: PropTypes.object.isRequired,
+    location: PropTypes.object.isRequired,
     networkIsSelected: PropTypes.bool,
     networksTabIsInAddMode: PropTypes.bool,
-    networksToRender: PropTypes.array,
+    networksToRender: PropTypes.array.isRequired,
     selectedNetwork: PropTypes.object,
-    setNetworksTabAddMode: PropTypes.func,
-    setRpcTarget: PropTypes.func,
-    setSelectedSettingsRpcUrl: PropTypes.func,
+    setNetworksTabAddMode: PropTypes.func.isRequired,
+    setRpcTarget: PropTypes.func.isRequired,
+    setSelectedSettingsRpcUrl: PropTypes.func.isRequired,
     providerUrl: PropTypes.string,
     providerType: PropTypes.string,
     networkDefaultedToProvider: PropTypes.bool,
diff --git a/ui/app/store/actions.js b/ui/app/store/actions.js
index 037fa982a5f1..7d45f0932b52 100644
--- a/ui/app/store/actions.js
+++ b/ui/app/store/actions.js
@@ -1983,13 +1983,13 @@ function updateAndSetCustomRpc (newRpc, chainId, ticker = 'ETH', nickname, rpcPr
 function editRpc (oldRpc, newRpc, chainId, ticker = 'ETH', nickname, rpcPrefs) {
   return (dispatch) => {
     log.debug(`background.delRpcTarget: ${oldRpc}`)
-    background.delCustomRpc(oldRpc, (err, result) => {
+    background.delCustomRpc(oldRpc, (err) => {
       if (err) {
         log.error(err)
         return dispatch(self.displayWarning('Had a problem removing network!'))
       }
       dispatch(actions.setSelectedToken())
-      background.updateAndSetCustomRpc(newRpc, chainId, ticker, nickname || newRpc, rpcPrefs, (err, result) => {
+      background.updateAndSetCustomRpc(newRpc, chainId, ticker, nickname || newRpc, rpcPrefs, (err) => {
         if (err) {
           log.error(err)
           return dispatch(actions.displayWarning('Had a problem changing networks!'))