diff --git a/pages/common/$.md b/pages/common/$.md
index 6adcaca886..0bf05a5c90 100644
--- a/pages/common/$.md
+++ b/pages/common/$.md
@@ -17,7 +17,7 @@
 
 - Print one of the prompt strings:
 
-`echo ${{PS1|PS2|PS3|PS4}}`
+`echo ${{PS0|PS1|PS2|PS3|PS4}}`
 
 - Expand with the output of `command` and run it. Same as enclosing `command` in backtics: