diff --git a/devtools/client/webconsole/components/Input/JSTerm.js b/devtools/client/webconsole/components/Input/JSTerm.js
index 9e7efa4e0660..35ad8f49f4e3 100644
--- a/devtools/client/webconsole/components/Input/JSTerm.js
+++ b/devtools/client/webconsole/components/Input/JSTerm.js
@@ -1230,7 +1230,7 @@ class JSTerm extends Component {
         className: "jsterm-input-container devtools-input devtools-monospace",
         key: "jsterm-container",
         "aria-live": "off",
-        tabindex: -1,
+        tabIndex: -1,
         onContextMenu: this.onContextMenu,
         ref: node => {
           this.node = node;