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-rw-r--r--lib/logger.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/logger.rb b/lib/logger.rb
index f0b99f75a2..4000dae50c 100644
--- a/lib/logger.rb
+++ b/lib/logger.rb
@@ -385,7 +385,7 @@ class Logger
self.datetime_format = datetime_format
self.formatter = formatter
@logdev = nil
- if logdev
+ if logdev && logdev != File::NULL
@logdev = LogDevice.new(logdev, shift_age: shift_age,
shift_size: shift_size,
shift_period_suffix: shift_period_suffix,