         case .spaces(let count):
             indentWidth = count
             useTabs = false
+        }
+
+        if options.useTabs {
+            queuedPrintError("'use-tabs' is deprecated and will be completely removed" +
+                " in a future release. 'indentation' can now be defined in a configuration file.")
+            useTabs = options.useTabs
         }
 
         return configuration.visitLintableFiles(path: options.path, action: "Correcting",

        let configuration = Configuration(options: options)
        let cache = options.ignoreCache ? nil : LinterCache(configuration: configuration)
        let indentWidth: Int
        let useTabs: Bool

        switch configuration.indentation {
        case .tabs:

                               usage: "ignore cache when correcting")
            <*> mode <| Option(key: "use-tabs",
                               defaultValue: false,
                               usage: "should use tabs over spaces when reformatting. Deprecated.")
    }
}
