diff --git a/CLIENT-SPECIFICATION.md b/CLIENT-SPECIFICATION.md
index 83762945e..c8fa9d2ac 100644
--- a/CLIENT-SPECIFICATION.md
+++ b/CLIENT-SPECIFICATION.md
@@ -33,7 +33,7 @@ Argument			| Required?	| Meaning
 `-v`, `--version`	| Yes		| Shows the current version of the client, and the version of this specification that it implements.
 `-l`, `--list`		| No		| Lists all the pages in the current platform to the standard output. If the special platform `all` is specified a list of all pages in all platforms MUST be displayed.
 `-p`, `--platform`	| Yes		| Specifies the platform that should be used for resolving page names. If specified, the named platform MUST be checked first instead of the host platform as described below.
-`-u`, `--update`	| Only if cache is implemented	| Updates the offline cache of pages. MUST be implemented if cache is supported.
+`-u`, `--update`	| Conditional	| Updates the offline cache of pages. MUST be implemented if cache is supported.
 
 Clients MAY NOT implement the long form of an argument (`--update`, `--version`, `--list`, `--platform`).