diff --git a/contributing/content-markup-reference.md b/contributing/content-markup-reference.md
index 9a0636a840..0298123710 100644
--- a/contributing/content-markup-reference.md
+++ b/contributing/content-markup-reference.md
@@ -64,7 +64,7 @@ Octicons are icons used across GitHub’s interface. We reference Octicons when
 
 `{% octicon "<name of octicon>" %}`  
 `{% octicon "plus" %}`
-`{% octicon "plus" aria-label="The plus icon"}`
+`{% octicon "plus" aria-label="The plus icon" %}`
 
 ## Operating system tags