diff --git a/Library/Homebrew/bottle_version.rb b/Library/Homebrew/bottle_version.rb
index de210e12b0..a6e488b4fc 100644
--- a/Library/Homebrew/bottle_version.rb
+++ b/Library/Homebrew/bottle_version.rb
@@ -40,10 +40,6 @@ class BottleVersion < Version
     m = /-(\d+\.(\d)+(p(\d)+)?)/.match(stem)
     return m.captures.first unless m.nil?
 
-    # e.g. 0_5_0 from disco-0_5_0.mavericks.bottle.tar.gz
-    m = /-(\d+_\d+(_\d+)+)/.match(stem)
-    return m.captures.first unless m.nil?
-
     # e.g. 20120731 from fontforge-20120731.mavericks.bottle.tar.gz
     m = /-(\d{8})/.match(stem)
     return m.captures.first unless m.nil?
diff --git a/Library/Homebrew/test/test_bottle_versions.rb b/Library/Homebrew/test/test_bottle_versions.rb
index 1ba8ba5d96..c6ab855cad 100644
--- a/Library/Homebrew/test/test_bottle_versions.rb
+++ b/Library/Homebrew/test/test_bottle_versions.rb
@@ -36,11 +36,6 @@ class BottleVersionParsingTests < Homebrew::TestCase
       '/usr/local/pazpar2-1.6.39.mavericks.bottle.tar.gz'
   end
 
-  def test_disco_style
-    assert_version_detected '0_5_0',
-      '/usr/local/disco-0_5_0.mavericks.bottle.tar.gz'
-  end
-
   def test_zpython_style
     assert_version_detected '00-5.0.5',
       '/usr/local/zpython-00-5.0.5.mavericks.bottle.tar.gz'