diff --git a/src/ContainerList.react.js b/src/ContainerList.react.js
index 9b1dcf9cb4..d2954dc603 100644
--- a/src/ContainerList.react.js
+++ b/src/ContainerList.react.js
@@ -9,14 +9,14 @@ var ContainerList = React.createClass({
   render: function () {
     var self = this;
     var containers = this.props.containers.map(function (container) {
-      var container_id = container.Id;
-      if (!container_id && container.State.Downloading) {
+      var containerId = container.Id;
+      if (!containerId && container.State.Downloading) {
         // Fall back to the container image name when there is no id. (when the
         // image is downloading).
-        container_id = container.Image;
+        containerId = container.Image;
       }
       return (
-        <ContainerListItem key={container_id} container={container} start={self._start} />
+        <ContainerListItem key={containerId} container={container} start={self._start} />
       );
     });
     var newItem;