diff --git a/INSTALL.md b/INSTALL.md
index da7921b8f7913983f53f05425c6a2f1fbee2888e..64e78412f575f35a130baefa9d0e4925d7bf5d87 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -1,6 +1,6 @@
 ## Compilation
 
-**Important**: If you plan to run RocksDB in production, don't compile using default 
+**Important**: If you plan to run RocksDB in production, don't compile using default
 `make` or `make all`. That will compile RocksDB in debug mode, which is much slower
 than release mode.
 
@@ -22,7 +22,8 @@ use binaries compiled by `make all` in production.
 
 * By default the binary we produce is optimized for the platform you're compiling on
 (-march=native or the equivalent). If you want to build a portable binary, add 'PORTABLE=1' before
-your make commands, like this: `PORTABLE=1 make static_lib`
+your make commands, like this: `PORTABLE=1 make static_lib`. If you want to build a binary that
+makes use of SSE4, add 'USE_SSE=1' before your make commands, like this: `USE_SSE=1 make static_lib`.
 
 ## Dependencies