diff --git a/tests/Android.bp b/tests/Android.bp
index a97f5a8..31ff582 100644
--- a/tests/Android.bp
+++ b/tests/Android.bp
@@ -670,7 +670,7 @@
     ],
     cflags: [
         "-Werror",
-        "-D_FORTIFY_SOURCE=2",
+        "-D_FORTIFY_SOURCE=3",
         "-D__clang_analyzer__",
     ],
     srcs: ["clang_fortify_tests.cpp"],