diff --git a/bin/verilator b/bin/verilator
index fb083c5c3..1b448da73 100755
--- a/bin/verilator
+++ b/bin/verilator
@@ -2071,18 +2071,18 @@ OPT, OPT_FAST, or OPT_SLOW lib/verilated.mk.  Or, use the -CFLAGS and/or
 the compiler or linker.  Or, just for one run, pass them on the command
 line to make:
 
-    make OPT_FAST="-Os -fno-stack-protector" -f Vour.mk Vour__ALL.a
+    make OPT_FAST="-Os -march=native -fno-stack-protector" -f Vour.mk Vour__ALL.a
 
 OPT_FAST specifies optimizations for those programs that are part of the
 fast path, mostly code that is executed every cycle.  OPT_SLOW specifies
 optimizations for slow-path files (plus tracing), which execute only
 rarely, yet take a long time to compile with optimization on.  OPT
 specifies overall optimization and affects all compiles, including those
-OPT_FAST and OPT_SLOW control.  For best results, use OPT="-Os", and link
-with "-static".  Nearly the same results can be had with much better
-compile times with OPT_FAST="-O1 -fstrict-aliasing".  Higher optimization
-such as "-O2" or "-O3" may help, but gcc compile times may be excessive
-under O3 on even medium sized designs.
+OPT_FAST and OPT_SLOW control.  For best results, use OPT="-Os
+-march=native", and link with "-static".  Nearly the same results can be
+had with much better compile times with OPT_FAST="-O1 -fstrict-aliasing".
+Higher optimization such as "-O2" or "-O3" may help, but gcc compile times
+may be excessive under O3 on even medium sized designs.
 
 Unfortunately, using the optimizer with SystemC files can result in
 compiles taking several minutes.  (The SystemC libraries have many little