diff --git a/Formula/tmux.rb b/Formula/tmux.rb
index c8803d937d..93a5dfaff2 100644
--- a/Formula/tmux.rb
+++ b/Formula/tmux.rb
@@ -31,4 +31,8 @@ class Tmux < Formula
       #{etc}/bash_completion.d/tmux
     EOS
   end
+
+  def test
+    system "#{bin}/tmux -V"
+  end
 end