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-rw-r--r--ext/tk/lib/multi-tk.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/tk/lib/multi-tk.rb b/ext/tk/lib/multi-tk.rb
index 36cb4388ae..78ed1aa6ee 100644
--- a/ext/tk/lib/multi-tk.rb
+++ b/ext/tk/lib/multi-tk.rb
@@ -949,7 +949,7 @@ class MultiTkIp
def _create_slave_ip_name
name = @@SLAVE_IP_ID.join('')
@@SLAVE_IP_ID[1].succ!
- name
+ name.freeze
end
private :_create_slave_ip_name