diff --git a/third_party/WebKit/Source/devtools/front_end/audits2/Audits2Panel.js b/third_party/WebKit/Source/devtools/front_end/audits2/Audits2Panel.js
index c77f8e30c8a2b9..6c3a86f3d3edaa 100644
--- a/third_party/WebKit/Source/devtools/front_end/audits2/Audits2Panel.js
+++ b/third_party/WebKit/Source/devtools/front_end/audits2/Audits2Panel.js
@@ -40,6 +40,8 @@ Audits2.Audits2Panel = class extends UI.PanelWithSidebar {
         this.contentElement, [UI.DropTarget.Types.Files], Common.UIString('Drop audit file here'),
         this._handleDrop.bind(this));
 
+    for (var preset of Audits2.Audits2Panel.Presets)
+      preset.setting.addChangeListener(this._updateStartButtonEnabled.bind(this));
     this._showLandingPage();
   }
 
@@ -103,6 +105,7 @@ Audits2.Audits2Panel = class extends UI.PanelWithSidebar {
     var buttonsRow = uiElement.createChild('div', 'audits2-dialog-buttons hbox');
     this._startButton =
         UI.createTextButton(Common.UIString('Run audit'), this._start.bind(this), 'material-button default');
+    this._updateStartButtonEnabled();
     buttonsRow.appendChild(this._startButton);
     this._cancelButton = UI.createTextButton(Common.UIString('Cancel'), this._cancel.bind(this), 'material-button');
     buttonsRow.appendChild(this._cancelButton);
@@ -114,6 +117,18 @@ Audits2.Audits2Panel = class extends UI.PanelWithSidebar {
     auditsViewElement.focus();
   }
 
+  _updateStartButtonEnabled() {
+    if (!this._startButton)
+      return;
+    for (var preset of Audits2.Audits2Panel.Presets) {
+      if (preset.setting.get()) {
+        this._startButton.disabled = false;
+        return;
+      }
+    }
+    this._startButton.disabled = true;
+  }
+
   /**
    * @param {!Element} launcherUIElement
    * @return {!Element}
diff --git a/third_party/WebKit/Source/devtools/front_end/audits2/audits2Panel.css b/third_party/WebKit/Source/devtools/front_end/audits2/audits2Panel.css
index f4538ea5ede4f6..be988c420a205b 100644
--- a/third_party/WebKit/Source/devtools/front_end/audits2/audits2Panel.css
+++ b/third_party/WebKit/Source/devtools/front_end/audits2/audits2Panel.css
@@ -22,6 +22,7 @@
     display: flex;
     align-items: center;
     justify-content: center;
+    overflow: auto;
 }
 
 
@@ -33,6 +34,10 @@
     margin: 50px;
 }
 
+.audits2-landing-center > * {
+    flex-shrink: 0;
+}
+
 .audits2-landing-text {
     color: #666;
 }
diff --git a/third_party/WebKit/Source/devtools/front_end/ui/inspectorCommon.css b/third_party/WebKit/Source/devtools/front_end/ui/inspectorCommon.css
index 14d1ea02c8f9fb..0163cbb120d413 100644
--- a/third_party/WebKit/Source/devtools/front_end/ui/inspectorCommon.css
+++ b/third_party/WebKit/Source/devtools/front_end/ui/inspectorCommon.css
@@ -397,6 +397,11 @@ button.material-button.default {
     background-color: #4285f4 !important;
 }
 
+button.material-button.default:disabled {
+    background-color: #ffffff !important;
+    color: gray;
+}
+
 button.material-button.default:not(:disabled):hover {
     background-color: hsla(217, 89%, 58%, 1) !important;
     color: white !important;