diff --git a/content/public/android/java/src/org/chromium/content/browser/input/SelectPopupAdapter.java b/content/public/android/java/src/org/chromium/content/browser/input/SelectPopupAdapter.java
index 1118e78..ca8e5f0 100644
--- a/content/public/android/java/src/org/chromium/content/browser/input/SelectPopupAdapter.java
+++ b/content/public/android/java/src/org/chromium/content/browser/input/SelectPopupAdapter.java
@@ -60,7 +60,11 @@
             if (mItems.get(position).getType() == PopupItemType.GROUP) {
                 // Currently select_dialog_multichoice uses CheckedTextViews.
                 // If that changes, the class cast will no longer be valid.
-                ((CheckedTextView) convertView).setCheckMarkDrawable(null);
+                // The WebView build cannot rely on this being the case, so
+                // we must check.
+                if (convertView instanceof CheckedTextView) {
+                    ((CheckedTextView) convertView).setCheckMarkDrawable(null);
+                }
             } else {
                 // Draw the disabled element in a disabled state.
                 convertView.setEnabled(false);