diff --git a/exo/05/20.md b/exo/05/20.md
index bf4d77e31c..ce78a87f02 100644
--- a/exo/05/20.md
+++ b/exo/05/20.md
@@ -1,4 +1,4 @@
 # palace
 
-This is a very large house that a king lives in./
+This is a very large house that a king lives in.