diff --git a/libm/Android.bp b/libm/Android.bp
index b6ad356..83f40c2 100644
--- a/libm/Android.bp
+++ b/libm/Android.bp
@@ -490,6 +490,7 @@
         "-DFLT_EVAL_METHOD=0",
         "-include freebsd-compat.h",
         "-include fenv-access.h",
+        "-fno-builtin",
         "-fno-math-errno",
         "-Wall",
         "-Werror",