diff --git a/quick-switch.sh b/quick-switch.sh
index 4414cc5..8edf613 100755
--- a/quick-switch.sh
+++ b/quick-switch.sh
@@ -1,6 +1,7 @@
 #!/usr/bin/env bash 
 set -euo pipefail
 
+# Stolen from https://stackoverflow.com/a/29436423 
 function yes_or_no {
     while true; do
         read -p "$* [y/n]: " yn