diff --git a/Library/Homebrew/dev-cmd/bump-cask-pr.rb b/Library/Homebrew/dev-cmd/bump-cask-pr.rb
index 0cd05870e3..0d433dba23 100644
--- a/Library/Homebrew/dev-cmd/bump-cask-pr.rb
+++ b/Library/Homebrew/dev-cmd/bump-cask-pr.rb
@@ -41,7 +41,7 @@ module Homebrew
       flag   "--version=",
              description: "Specify the new <version> for the cask."
       flag   "--message=",
-             description: "Append <message> to the default pull request message."
+             description: "Prepend <message> to the default pull request message."
       flag   "--url=",
              description: "Specify the <URL> for the new download."
       flag   "--sha256=",
diff --git a/Library/Homebrew/dev-cmd/bump-formula-pr.rb b/Library/Homebrew/dev-cmd/bump-formula-pr.rb
index e9f87bc454..c713bcdd44 100644
--- a/Library/Homebrew/dev-cmd/bump-formula-pr.rb
+++ b/Library/Homebrew/dev-cmd/bump-formula-pr.rb
@@ -60,7 +60,7 @@ module Homebrew
                           "that `--version=0` can be used to delete an existing version override from a " \
                           "formula if it has become redundant."
       flag   "--message=",
-             description: "Append <message> to the default pull request message."
+             description: "Prepend <message> to the default pull request message."
       flag   "--url=",
              description: "Specify the <URL> for the new download. If a <URL> is specified, the <SHA-256> " \
                           "checksum of the new download should also be specified."