diff --git a/Library/brew.sh b/Library/brew.sh
index 5381dd70d4e03..66858a73749c9 100644
--- a/Library/brew.sh
+++ b/Library/brew.sh
@@ -230,7 +230,7 @@ setup-analytics
 report-analytics-screenview-command
 
 update-preinstall() {
-  [[ -n "$HOMEBREW_AUTO_UPDATE" ]] || return
+  [[ -n "$HOMEBREW_DEVELOPER" ]] || return
   [[ -z "$HOMEBREW_NO_AUTO_UPDATE" ]] || return
   [[ -z "$HOMEBREW_UPDATE_PREINSTALL" ]] || return