Fix typo
diff --git a/README b/README
index 8b9d012..0f37235 100644
--- a/README
+++ b/README
@@ -93,7 +93,7 @@
 Build Instructions
 ------------------
 
-On Unix, Linx, BSD, OSX, and Cygwin:
+On Unix, Linux, BSD, OSX, and Cygwin:
 
     ./configure
     make