diff --git a/Rakefile b/Rakefile
index fd23180..de492c8 100644
--- a/Rakefile
+++ b/Rakefile
@@ -251,7 +251,11 @@ def install_prezto
     puts "Zsh is already configured as your shell of choice. Restart your session to load the new settings"
   else
     puts "Setting zsh as your default shell"
-    run %{ chsh -s /usr/local/bin/zsh }
+    if File.exists?("/usr/local/bin/zsh")
+      run %{ chsh -s /usr/local/bin/zsh }
+    else
+      run %{ chsh -s /bin/zsh }
+    end
   end
 end