diff --git a/packages/DocumentsUI/src/com/android/documentsui/Events.java b/packages/DocumentsUI/src/com/android/documentsui/Events.java
index 14d4e2d942d97..02a9127342393 100644
--- a/packages/DocumentsUI/src/com/android/documentsui/Events.java
+++ b/packages/DocumentsUI/src/com/android/documentsui/Events.java
@@ -53,7 +53,8 @@ public final class Events {
      */
     public static boolean isTouchType(int toolType) {
         return toolType == MotionEvent.TOOL_TYPE_FINGER
-                || toolType == MotionEvent.TOOL_TYPE_STYLUS;
+                || toolType == MotionEvent.TOOL_TYPE_STYLUS
+                || toolType == MotionEvent.TOOL_TYPE_UNKNOWN;
     }
 
     /**