diff --git a/tools/upgrade.sh b/tools/upgrade.sh
index 7fe346b3c..6fc33b12b 100755
--- a/tools/upgrade.sh
+++ b/tools/upgrade.sh
@@ -159,14 +159,14 @@ fi
 git remote -v | while read remote url extra; do
   case "$url" in
   https://github.com/snakewarhead/oh-my-zsh(|.git))
-    git remote set-url "$remote" "https://github.com/ohmyzsh/ohmyzsh.git"
+    git remote set-url upstream "https://github.com/ohmyzsh/ohmyzsh.git"
     break ;;
   git@github.com:snakewarhead/oh-my-zsh(|.git))
-    git remote set-url "$remote" "git@github.com:ohmyzsh/ohmyzsh.git"
+    git remote set-url upstream "git@github.com:ohmyzsh/ohmyzsh.git"
     break ;;
   # Update out-of-date "unauthenticated git protocol on port 9418" to https
   git://github.com/snakewarhead/oh-my-zsh(|.git))
-    git remote set-url "$remote" "https://github.com/ohmyzsh/ohmyzsh.git"
+    git remote set-url upstream "https://github.com/ohmyzsh/ohmyzsh.git"
     break ;;
   esac
 done