diff --git a/libs/gui/Android.bp b/libs/gui/Android.bp
index 326da3a..8c250a4 100644
--- a/libs/gui/Android.bp
+++ b/libs/gui/Android.bp
@@ -55,6 +55,7 @@
 filegroup {
     name: "guiconstants_aidl",
     srcs: [
+        "android/**/DropInputMode.aidl",
         "android/**/TouchOcclusionMode.aidl",
     ],
 }