diff --git a/libs/graphicsenv/Android.bp b/libs/graphicsenv/Android.bp
index f2686d5..9f99538 100644
--- a/libs/graphicsenv/Android.bp
+++ b/libs/graphicsenv/Android.bp
@@ -19,6 +19,8 @@
         "GraphicsEnv.cpp",
     ],
 
+    cflags: ["-Wall", "-Werror"],
+
     shared_libs: [
         "libnativeloader",
         "liblog",