diff --git a/Library/Homebrew/dev-cmd/pr-automerge.rb b/Library/Homebrew/dev-cmd/pr-automerge.rb
index 24ed7f5d3d..78c4097a12 100644
--- a/Library/Homebrew/dev-cmd/pr-automerge.rb
+++ b/Library/Homebrew/dev-cmd/pr-automerge.rb
@@ -49,7 +49,7 @@ module Homebrew
       return
     end
 
-    ohai "#{prs.size} matching pull requests:"
+    ohai "#{prs.count} matching pull #{"request".pluralize(prs.count)}:"
     pr_urls = []
     prs.each do |pr|
       puts "#{tap.full_name unless tap.core_tap?}##{pr["number"]}: #{pr["title"]}"