diff --git a/CMakeLists.txt b/CMakeLists.txt
index 293d09d..101303a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,7 +8,7 @@ set(CMAKE_CXX_STANDARD 14)
 find_package(Eigen3 REQUIRED NO_MODULE)
 find_package(OpenMP)
 
-SET(CMAKE_CXX_FLAGS  "${CMAKE_CXX_FLAGS} -O2 -mfma")
+## SET(CMAKE_CXX_FLAGS  "${CMAKE_CXX_FLAGS} -O2 -mfma")
 option(USE_OPENMP "Compile with OpenMP support" ON)
 
 add_subdirectory(app)