diff --git a/Library/Homebrew/utils/shfmt.sh b/Library/Homebrew/utils/shfmt.sh
index 3359a6adf4..996d1bb18b 100755
--- a/Library/Homebrew/utils/shfmt.sh
+++ b/Library/Homebrew/utils/shfmt.sh
@@ -56,7 +56,7 @@ do
     shift
     break
   fi
-  if [[ "${arg}" == "-w" ]]
+  if [[ "${arg}" == "-w" || "${arg}" == "--write" ]]
   then
     shift
     INPLACE=1