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dlepow · dlepow · commit 459817df1b7f · 2019-08-13T17:14:23.000-07:00
diff --git a/articles/container-registry/container-registry-auto-purge.md b/articles/container-registry/container-registry-auto-purge.md
@@ -40,7 +40,7 @@ At a minimum, specify the following when you run `acr purge`:
 
 * `--registry` - The Azure container registry where you run the command. 
 * `--filter` - A repository and a *regular expression* to filter tags in the repository. Examples: `--filter "hello-world:.*"` matches all tags in the `hello-world` repository, and `--filter "hello-world:^1.*"` matches tags beginning with `1`. Pass multiple `--filter` parameters to purge multiple repositories.
-* `--ago` - A Go-style [duration string](https://golang.org/pkg/time/) to indicate a duration beyond which images are deleted. The duration consists of a sequence of decimal number, each with a unit suffix. Valid time units include "d" for days, "h" for hours, "m" for minutes. For example, `--ago 2d3h6m` selects all filtered images last modified more than 2 days, 3 hours, and 6 minutes ago. `--ago 1.5h` selects all filtered images last modified more than 1.5 hours ago.
+* `--ago` - A Go-style [duration string](https://golang.org/pkg/time/) to indicate a duration beyond which images are deleted. The duration consists of a sequence of one or more decimal numbers, each with a unit suffix. Valid time units include "d" for days, "h" for hours, and "m" for minutes. For example, `--ago 2d3h6m` selects all filtered images last modified more than 2 days, 3 hours, and 6 minutes ago, and `--ago 1.5h` selects images last modified more than 1.5 hours ago.
 
 `acr purge` supports several optional parameters. The following two are used in examples in this article:
 
