diff --git a/input/classifier/1.0/IInputClassifier.hal b/input/classifier/1.0/IInputClassifier.hal
index edc1138..5f8c2a5 100644
--- a/input/classifier/1.0/IInputClassifier.hal
+++ b/input/classifier/1.0/IInputClassifier.hal
@@ -16,6 +16,9 @@
 
 package android.hardware.input.classifier@1.0;
 
+import android.hardware.input.common@1.0::Classification;
+import android.hardware.input.common@1.0::MotionEvent;
+
 interface IInputClassifier {
 
   /**