diff --git a/bin/brew b/bin/brew
index 32343baa25..9a06b0911c 100755
--- a/bin/brew
+++ b/bin/brew
@@ -75,7 +75,7 @@ HOMEBREW_LIBRARY="${HOMEBREW_REPOSITORY}/Library"
 
 # Copy and export all HOMEBREW_* variables previously mentioned in
 # manpage or used elsewhere by Homebrew.
-for VAR in BAT_THEME BROWSER DISPLAY EDITOR NO_COLOR PATH TMUX DBUS_SESSION_BUS_ADDRESS
+for VAR in BAT_THEME BROWSER DISPLAY EDITOR NO_COLOR TMUX DBUS_SESSION_BUS_ADDRESS
 do
   # Skip if variable value is empty.
   [[ -z "${!VAR}" ]] && continue
@@ -109,6 +109,11 @@ then
   export CI="1"
 fi
 
+# save the existing user path as HOMEBREW_PATH so it can be queried by
+# e.g. brew doctor later.
+HOMEBREW_PATH="${PATH}"
+export HOMEBREW_PATH
+
 # set from user environment
 # shellcheck disable=SC2154
 if [[ -z "${HOMEBREW_NO_ENV_FILTERING}" ]]