diff --git a/src/backend/utils/misc/postgresql.conf.sample b/src/backend/utils/misc/postgresql.conf.sample
index 34a2d05d39..7a18e72750 100644
--- a/src/backend/utils/misc/postgresql.conf.sample
+++ b/src/backend/utils/misc/postgresql.conf.sample
@@ -534,6 +534,7 @@
 
 #dynamic_library_path = '$libdir'
 #local_preload_libraries = ''
+#session_preload_libraries = ''
 
 
 #------------------------------------------------------------------------------