diff --git a/cmake/GtsamBuildTypes.cmake b/cmake/GtsamBuildTypes.cmake
index 33e0c33a0..e63fbf1dd 100644
--- a/cmake/GtsamBuildTypes.cmake
+++ b/cmake/GtsamBuildTypes.cmake
@@ -192,7 +192,6 @@ endif()
 if (NOT MSVC)
   option(GTSAM_BUILD_WITH_MARCH_NATIVE  "Enable/Disable building with all instructions supported by native architecture (binary may not be portable!)" OFF)
   if(GTSAM_BUILD_WITH_MARCH_NATIVE AND (APPLE AND NOT CMAKE_SYSTEM_PROCESSOR STREQUAL "arm64"))
-  if(GTSAM_BUILD_WITH_MARCH_NATIVE)
     # Add as public flag so all dependant projects also use it, as required
     # by Eigen to avid crashes due to SIMD vectorization:
     list_append_cache(GTSAM_COMPILE_OPTIONS_PUBLIC "-march=native")