diff --git a/CMakeLists.txt b/CMakeLists.txt
index 959134a61..ec7729b2e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -128,10 +128,10 @@ elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
   set(REL_FLAGS "${WARN_FLAGS}")
 elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "AppleClang")
   # AppleClang does not support -ffunction-sections and -fdata-sections with the -fembed-bitcode and -fembed-bitcode-marker
-  set(REL_FLAGS "-Os ${WARN_FLAGS} -fmerge-all-constants -ffast-math")
+  set(REL_FLAGS "-Os ${WARN_FLAGS} -fmerge-all-constants")
 else()
   # Using clang - strip unsupported GCC options
-  set(REL_FLAGS "-Os ${WARN_FLAGS} -ffunction-sections -fmerge-all-constants -ffast-math")
+  set(REL_FLAGS "-Os ${WARN_FLAGS} -ffunction-sections -fmerge-all-constants")
 endif()
 
 ## Uncomment this to reduce the volume of note warnings on RPi4 w/gcc-8 Ref. https://gcc.gnu.org/ml/gcc/2017-05/msg00073.html