diff --git a/Library/Homebrew/dev-cmd/man.rb b/Library/Homebrew/dev-cmd/man.rb
index 0486365b7c..2a51439714 100644
--- a/Library/Homebrew/dev-cmd/man.rb
+++ b/Library/Homebrew/dev-cmd/man.rb
@@ -88,7 +88,7 @@ module Homebrew
       readme.read[/(Former maintainers .*\.)/, 1]
             .gsub(/\[([^\]]+)\]\([^)]+\)/, '\1')
 
-    ERB.new(template, nil, ">").result(variables.instance_eval { binding })
+    ERB.new(template, trim_mode: ">").result(variables.instance_eval { binding })
   end
 
   def sort_key_for_path(path)
diff --git a/Library/Homebrew/formula_creator.rb b/Library/Homebrew/formula_creator.rb
index 168436d4ee..85a2e7c3f5 100644
--- a/Library/Homebrew/formula_creator.rb
+++ b/Library/Homebrew/formula_creator.rb
@@ -76,7 +76,7 @@ module Homebrew
         end
       end
 
-      path.write ERB.new(template, nil, ">").result(binding)
+      path.write ERB.new(template, trim_mode: ">").result(binding)
     end
 
     def template