diff --git a/libc/src/math/generic/CMakeLists.txt b/libc/src/math/generic/CMakeLists.txt
--- a/libc/src/math/generic/CMakeLists.txt
+++ b/libc/src/math/generic/CMakeLists.txt
@@ -704,6 +704,7 @@
     libc.src.__support.FPUtil.fputil
     COMPILE_OPTIONS
     -O3
+    -mfma
 )
 
 add_entrypoint_object(