diff --git a/libs/hwui/Android.bp b/libs/hwui/Android.bp
index 8d4bda2..dd6c2bc 100644
--- a/libs/hwui/Android.bp
+++ b/libs/hwui/Android.bp
@@ -347,6 +347,7 @@
         "jni/CreateJavaOutputStreamAdaptor.cpp",
         "jni/FontFamily.cpp",
         "jni/FontUtils.cpp",
+        "jni/Gainmap.cpp",
         "jni/Graphics.cpp",
         "jni/ImageDecoder.cpp",
         "jni/Interpolator.cpp",