diff --git a/README.md b/README.md
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--- a/README.md
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@@ -6,7 +6,7 @@ _Not currently available for Linux, because [NSTask](https://github.com/apple/sw
 
 # SwiftShell
 
-A macOS Framework for command-line scripting in Swift.
+An OS X/macOS Framework for command-line scripting in Swift.
 
 #### See also