diff --git a/config/gfortran.cfg b/config/gfortran.cfg
index 94a12ccf..f561fcb7 100644
--- a/config/gfortran.cfg
+++ b/config/gfortran.cfg
@@ -35,7 +35,7 @@ OPENMP  : 1          ; Append OpenMP flags
 #                           -ffast-math and the Fortran-specific
 #                           -fno-protect-parens and -fstack-arrays.
 [OPT]
-FCFLAGS : -Ofast -march=native
+FCFLAGS : -Ofast -msse4.2
 
 # Profiling flags
 #################