diff --git a/llvm/docs/CommandGuide/llvm-nm.rst b/llvm/docs/CommandGuide/llvm-nm.rst
index 99e7f18..b5bd756 100644
--- a/llvm/docs/CommandGuide/llvm-nm.rst
+++ b/llvm/docs/CommandGuide/llvm-nm.rst
@@ -100,8 +100,8 @@
 
 .. option:: --format=format, -f format
 
- Select an output format; *format* may be *sysv*, *posix*, or *bsd*.  The default
- is *bsd*.
+ Select an output format; *format* may be *sysv*, *posix*, *darwin*, or *bsd*.
+ The default is *bsd*.
 
 .. option:: --help, -h