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-rw-r--r--lib/dtas/source/mp3gain.rb3
1 files changed, 1 insertions, 2 deletions
diff --git a/lib/dtas/source/mp3gain.rb b/lib/dtas/source/mp3gain.rb
index fe0b642..b48c759 100644
--- a/lib/dtas/source/mp3gain.rb
+++ b/lib/dtas/source/mp3gain.rb
@@ -1,4 +1,3 @@
-# -*- encoding: binary -*-
 # Copyright (C) 2013, Eric Wong <normalperson@yhbt.net> and all contributors
 # License: GPLv3 or later (https://www.gnu.org/licenses/gpl-3.0.txt)
 require_relative '../process'
@@ -15,7 +14,7 @@ module DTAS::Source::Mp3gain # :nodoc:
     tmp = {}
     case @infile
     when String
-      @infile =~ /\.mp[g23]\z/i or return
+      @infile =~ /\.mp[g23]\z/in or return
       qx(%W(mp3gain -s c #@infile)).split(/\n/).each do |line|
         case line
         when /^Recommended "(Track|Album)" dB change:\s*(\S+)/