diff --git a/Library/Homebrew/extend/ENV/std.rb b/Library/Homebrew/extend/ENV/std.rb
index 8992f8f840..bc165c667b 100644
--- a/Library/Homebrew/extend/ENV/std.rb
+++ b/Library/Homebrew/extend/ENV/std.rb
@@ -81,7 +81,6 @@ module Stdenv
   # Removes the MAKEFLAGS environment variable, causing make to use a single job.
   # This is useful for makefiles with race conditions.
   # When passed a block, MAKEFLAGS is removed only for the duration of the block and is restored after its completion.
-  # Returns the value of MAKEFLAGS.
   def deparallelize
     old = self['MAKEFLAGS']
     remove 'MAKEFLAGS', /-j\d+/
diff --git a/Library/Homebrew/extend/ENV/super.rb b/Library/Homebrew/extend/ENV/super.rb
index e21fc554ee..87ecc5de05 100644
--- a/Library/Homebrew/extend/ENV/super.rb
+++ b/Library/Homebrew/extend/ENV/super.rb
@@ -245,7 +245,6 @@ module Superenv
   # Removes the MAKEFLAGS environment variable, causing make to use a single job.
   # This is useful for makefiles with race conditions.
   # When passed a block, MAKEFLAGS is removed only for the duration of the block and is restored after its completion.
-  # Returns the value of MAKEFLAGS.
   def deparallelize
     old = delete('MAKEFLAGS')
     if block_given?