diff --git a/autofailover_quick_setup.rst b/autofailover_quick_setup.rst
index 647c5f76..3ed0820f 100644
--- a/autofailover_quick_setup.rst
+++ b/autofailover_quick_setup.rst
@@ -223,7 +223,7 @@ Edit the repmgr.conf of the node to remove from automatic processing and change:
 Then, signal repmgrd daemon::
 
   su - postgres
-  kill -HUP `pidof repmgrd`
+  kill -HUP $(pidof repmgrd)
 
 Usage
 =====