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-rw-r--r--ext/tk/lib/remote-tk.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/ext/tk/lib/remote-tk.rb b/ext/tk/lib/remote-tk.rb
index 165e6587fd..4d33637c30 100644
--- a/ext/tk/lib/remote-tk.rb
+++ b/ext/tk/lib/remote-tk.rb
@@ -7,6 +7,8 @@ if defined? MultiTkIp
fail RuntimeError, "'remote-tk' library must be required before requiring 'multi-tk'"
end
+require 'tkutil'
+
class MultiTkIp; end
class RemoteTkIp < MultiTkIp; end