diff --git a/config/aerc.conf.in b/config/aerc.conf.in
index 2f9f264..917dc22 100644
--- a/config/aerc.conf.in
+++ b/config/aerc.conf.in
@@ -46,7 +46,7 @@ new-message-bell=true
 # Marker to show before a pinned tab's name.
 #
 # Default: `
-pinned-tab-marker=`
+pinned-tab-marker='`'
 
 # Describes the format string to use for the directory list
 #