diff --git a/intern/libc_compat/CMakeLists.txt b/intern/libc_compat/CMakeLists.txt
index f8fede5673b..21d252806d4 100644
--- a/intern/libc_compat/CMakeLists.txt
+++ b/intern/libc_compat/CMakeLists.txt
@@ -32,6 +32,4 @@ set(SRC
 set(LIB
 )
 
-add_c_flag(-ffast-math)
-
 blender_add_lib(bf_intern_libc_compat "${SRC}" "${INC}" "${INC_SYS}" "${LIB}")