diff --git a/services/surfaceflinger/Android.bp b/services/surfaceflinger/Android.bp
index 4c5e5da..8fa35d8 100644
--- a/services/surfaceflinger/Android.bp
+++ b/services/surfaceflinger/Android.bp
@@ -7,6 +7,7 @@
         "-Wthread-safety",
         "-Wunused",
         "-Wunreachable-code",
+        "-Wconversion",
     ],
 }