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-rw-r--r--lib/rainbows/fiber/io.rb4
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/rainbows/fiber/io.rb b/lib/rainbows/fiber/io.rb
index 339ac0a..5153070 100644
--- a/lib/rainbows/fiber/io.rb
+++ b/lib/rainbows/fiber/io.rb
@@ -19,7 +19,9 @@ module Rainbows
       end
 
       def close
-        to_io.close
+        RD.delete(self)
+        WR.delete(self)
+        to_io.close unless to_io.closed?
       end
 
       def wait_readable