diff --git a/README.fb b/README.fb
index e2581eb5f..e5370c055 100644
--- a/README.fb
+++ b/README.fb
@@ -4,7 +4,9 @@
 
 * Compiling for CPUs with SSE4 support
 
-  make OPT='-O2 -DNDEBUG -msse4'
+  make OPT='-O2 -DNDEBUG -D__SSE4_2__'
   
   This makes CRC computation much faster, but
   binaries won't run on CPUs that don't support it.
+
+* Latest release is 1.4.0.fb