diff --git a/README.md b/README.md
index ca384b3..f66cc03 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ Usage:
     age --decrypt [-i KEY] [-o OUTPUT] [INPUT]
 
 Options:
-    -o OUTPUT                   Write the result to the file at path OUTPUT.
+    -o, --output OUTPUT         Write the result to the file at path OUTPUT.
     -a, --armor                 Encrypt to a PEM encoded format.
     -p, --passphrase            Encrypt with a passphrase.
     -r, --recipient RECIPIENT   Encrypt to the specified RECIPIENT. Can be repeated.
@@ -40,18 +40,20 @@ Multiple keys can be provided, and any unused ones will be ignored.
 
 ## Installation
 
-On macOS, use Homebrew.
+On macOS, you can use Homebrew:
 
 ```
 brew tap filippo.io/age https://filippo.io/age
 brew install age
 ```
 
-On Linux and Windows, use [the pre-built binaries](https://github.com/FiloSottile/age/releases) or build from source with Go 1.13+.
+On Windows, Linux, and macOS, you can use [the pre-built binaries](https://github.com/FiloSottile/age/releases).
+
+If your system has [Go 1.13+](https://golang.org/dl/), you can build from source:
 
 ```
 git clone https://filippo.io/age && cd age
-go build filippo.io/cmd/age/...
+go build filippo.io/age/cmd/...
 ```
 
 Help from new packagers is very welcome.