diff --git a/src/components/views/dialogs/DevtoolsDialog.js b/src/components/views/dialogs/DevtoolsDialog.js
index f9ee7c5d2..dc8f8769c 100644
--- a/src/components/views/dialogs/DevtoolsDialog.js
+++ b/src/components/views/dialogs/DevtoolsDialog.js
@@ -16,6 +16,7 @@ limitations under the License.
 
 import React from 'react';
 import sdk from 'matrix-react-sdk';
+import { _t } from 'matrix-react-sdk/lib/languageHandler';
 import MatrixClientPeg from 'matrix-react-sdk/lib/MatrixClientPeg';
 
 class SendCustomEvent extends React.Component {
@@ -44,8 +45,8 @@ class SendCustomEvent extends React.Component {
 
     _buttons() {
         return <div className="mx_Dialog_buttons">
-            <button onClick={this.onBack}>Back</button>
-            {!this.state.message && <button onClick={this._send}>Send</button>}
+            <button onClick={this.onBack}>{ _t('Back') }</button>
+            {!this.state.message && <button onClick={this._send}>{ _t('Send') }</button>}
         </div>;
     }
 
@@ -58,9 +59,9 @@ class SendCustomEvent extends React.Component {
         try {
             const content = JSON.parse(this.refs.evContent.value);
             await this.send(content);
-            message = 'Event sent!';
+            message = _t('Event sent!');
         } catch (e) {
-            message = 'Failed to send custom event.' + ` (${e.toString()})`;
+            message = `${_t('Failed to send custom event.')} (${e.toString()})`;
         }
         this.setState({ message });
     }
@@ -78,14 +79,14 @@ class SendCustomEvent extends React.Component {
         return <div>
             <div className="mx_Dialog_content">
                 <div className="mx_TextInputDialog_label">
-                    <label htmlFor="eventType"> Event Type </label>
+                    <label htmlFor="eventType"> { _t('Event Type') } </label>
                 </div>
                 <div>
                     <input id="eventType" ref="eventType" className="mx_TextInputDialog_input" size="64" />
                 </div>
 
                 <div className="mx_TextInputDialog_label">
-                    <label htmlFor="evContent"> Event Content </label>
+                    <label htmlFor="evContent"> { _t('Event Content') } </label>
                 </div>
                 <div>
                     <textarea id="evContent" ref="evContent" className="mx_TextInputDialog_input" defaultValue={"{\n\n}"} cols="63" rows="5" />
@@ -115,21 +116,21 @@ class SendCustomStateEvent extends SendCustomEvent {
         return <div>
             <div className="mx_Dialog_content">
                 <div className="mx_TextInputDialog_label">
-                    <label htmlFor="stateKey"> State Key </label>
+                    <label htmlFor="stateKey"> { _t('State Key') } </label>
                 </div>
                 <div>
                     <input id="stateKey" ref="stateKey" className="mx_TextInputDialog_input" size="64" />
                 </div>
 
                 <div className="mx_TextInputDialog_label">
-                    <label htmlFor="eventType"> Event Type </label>
+                    <label htmlFor="eventType"> { _t('Event Type') } </label>
                 </div>
                 <div>
                     <input id="eventType" ref="eventType" className="mx_TextInputDialog_input" size="64" />
                 </div>
 
                 <div className="mx_TextInputDialog_label">
-                    <label htmlFor="evContent"> Event Content </label>
+                    <label htmlFor="evContent"> { _t('Event Content') } </label>
                 </div>
                 <div>
                     <textarea id="evContent" ref="evContent" className="mx_TextInputDialog_input" defaultValue={"{\n\n}"} cols="63" rows="5" />
@@ -191,7 +192,7 @@ class RoomStateExplorer extends React.Component {
                     <pre>{JSON.stringify(this.state.event, null, 2)}</pre>
                 </div>
                 <div className="mx_Dialog_buttons">
-                    <button onClick={this.onBack}>Back</button>
+                    <button onClick={this.onBack}>{ _t('Back') }</button>
                 </div>
             </div>;
         }
@@ -226,7 +227,7 @@ class RoomStateExplorer extends React.Component {
                 {rows}
             </div>
             <div className="mx_Dialog_buttons">
-                <button onClick={this.onBack}>Back</button>
+                <button onClick={this.onBack}>{ _t('Back') }</button>
             </div>
         </div>;
     }
@@ -274,18 +275,18 @@ export default class DevtoolsDialog extends React.Component {
         } else {
             body = <div>
                 <div className="mx_Dialog_content">
-                    <button onClick={this._setMode(SendCustomEvent)}>Send Custom Event</button>
-                    <button onClick={this._setMode(SendCustomStateEvent)}>Send Custom State Event</button>
-                    <button onClick={this._setMode(RoomStateExplorer)}>Explore Room State</button>
+                    <button onClick={this._setMode(SendCustomEvent)}>{ _t('Send Custom Event') }</button>
+                    <button onClick={this._setMode(SendCustomStateEvent)}>{ _t('Send Custom State Event') }</button>
+                    <button onClick={this._setMode(RoomStateExplorer)}>{ _t('Explore Room State') }</button>
                 </div>
                 <div className="mx_Dialog_buttons">
-                    <button onClick={this.onCancel}>Cancel</button>
+                    <button onClick={this.onCancel}>{ _t('Cancel') }</button>
                 </div>
             </div>;
         }
 
         const BaseDialog = sdk.getComponent('views.dialogs.BaseDialog');
-        return <BaseDialog className="mx_QuestionDialog" onFinished={this.props.onFinished} title="Developer Tools">
+        return <BaseDialog className="mx_QuestionDialog" onFinished={this.props.onFinished} title={_t('Developer Tools')}>
             <div>Room ID: {this.props.roomId}</div>
             { body }
         </BaseDialog>;
diff --git a/src/i18n/strings/en_EN.json b/src/i18n/strings/en_EN.json
index cecb248ce..b755400fb 100644
--- a/src/i18n/strings/en_EN.json
+++ b/src/i18n/strings/en_EN.json
@@ -9,6 +9,7 @@
   "All Rooms": "All Rooms",
   "All notifications are currently disabled for all targets.": "All notifications are currently disabled for all targets.",
   "An error occurred whilst saving your email notification preferences.": "An error occurred whilst saving your email notification preferences.",
+  "Back": "Back",
   "Call invitation": "Call invitation",
   "Cancel": "Cancel",
   "Cancel Sending": "Cancel Sending",
@@ -25,6 +26,7 @@
   "delete the alias.": "delete the alias.",
   "Delete the room alias %(alias)s and remove %(name)s from the directory?": "Delete the room alias %(alias)s and remove %(name)s from the directory?",
   "Describe your problem here.": "Describe your problem here.",
+  "Developer Tools": "Developer Tools",
   "Direct Chat": "Direct Chat",
   "Directory": "Directory",
   "Dismiss": "Dismiss",
@@ -49,6 +51,7 @@
   "Failed to get public room list": "Failed to get public room list",
   "Failed to join the room": "Failed to join the room",
   "Failed to remove tag %(tagName)s from room": "Failed to remove tag %(tagName)s from room",
+  "Failed to send custom event.": "Failed to send custom event.",
   "Failed to send report: ": "Failed to send report: ",
   "Failed to set direct chat tag": "Failed to set direct chat tag",
   "Failed to set Direct Message status of room": "Failed to set Direct Message status of room",
@@ -116,6 +119,9 @@
   "Search for a room": "Search for a room",
   "Send": "Send",
   "Send logs": "Send logs",
+  "Send Custom Event": "Send Custom Event",
+  "Send Custom State Event": "Send Custom State Event",
+  "Explore Room State": "Explore Room State",
   "Settings": "Settings",
   "Source URL": "Source URL",
   "Sorry, your browser is <b>not</b> able to run Riot.": "Sorry, your browser is <b>not</b> able to run Riot.",
@@ -162,6 +168,10 @@
   "Warning": "Warning",
   "Checking for an update...": "Checking for an update...",
   "Error encountered (%(errorDetail)s).": "Error encountered (%(errorDetail)s).",
+  "Event sent!": "Event sent!",
+  "Event Type": "Event Type",
+  "Event Content": "Event Content",
+  "State Key": "State Key",
   "No update available.": "No update available.",
   "Downloading update...": "Downloading update...",
   "You need to be using HTTPS to place a screen-sharing call.": "You need to be using HTTPS to place a screen-sharing call.",