diff --git a/exo/20/09.md b/exo/20/09.md
index b709181a8f..c636ef25c5 100644
--- a/exo/20/09.md
+++ b/exo/20/09.md
@@ -1,4 +1,4 @@
 # do all your work
 
-"do all your usual duties"/
+"do all your usual duties"