diff --git a/makefile b/makefile
index eb6e573258b..573ec648cac 100644
--- a/makefile
+++ b/makefile
@@ -163,9 +163,10 @@ endif
 
 # uncomment and specify architecture-specific optimizations here
 # some examples:
-#   optimize for I686:   ARCHOPTS = -march=pentiumpro
-#   optimize for Core 2: ARCHOPTS = -march=core2
-#   optimize for G4:     ARCHOPTS = -mcpu=G4
+#   ARCHOPTS = -march=pentiumpro  # optimize for I686
+#   ARCHOPTS = -march=core2       # optimize for Core 2
+#   ARCHOPTS = -march=native      # optimize for local machine (auto detect)
+#   ARCHOPTS = -mcpu=G4           # optimize for G4
 # note that we leave this commented by default so that you can
 # configure this in your environment and never have to think about it
 # ARCHOPTS =