diff --git a/tools/upgrade.sh b/tools/upgrade.sh
index e41817885..2edf5b059 100755
--- a/tools/upgrade.sh
+++ b/tools/upgrade.sh
@@ -33,7 +33,7 @@ if [ -t 1 ]; then
 fi
 
 # Update upstream remote to ohmyzsh org
-git remote -v | while read remote url _; do
+git remote -v | while read remote url extra; do
   case "$url" in
   https://github.com/robbyrussell/oh-my-zsh(|.git))
     git remote set-url "$remote" "https://github.com/ohmyzsh/ohmyzsh.git"