diff --git a/libm/Android.bp b/libm/Android.bp
index e5cb029..bf86264 100644
--- a/libm/Android.bp
+++ b/libm/Android.bp
@@ -506,6 +506,7 @@
     ],
 
     cflags: [
+        "-D__BIONIC_LP32_USE_LONG_DOUBLE",
         "-D__BIONIC_NO_MATH_INLINES",
         "-D_BSD_SOURCE",
         "-DFLT_EVAL_METHOD=0",