diff --git a/src/backend/utils/misc/postgresql.conf.sample b/src/backend/utils/misc/postgresql.conf.sample
index 34a2d05d39e788b76f6ef799751ecd191527e6e0..7a18e727506776c3b221b9c1caad452e36fcfabb 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 = ''
 
 
 #------------------------------------------------------------------------------