diff --git a/gpdb-doc/dita/ref_guide/config_params/guc-list.xml b/gpdb-doc/dita/ref_guide/config_params/guc-list.xml
index a5737a51486bfdf3ae77fcdd1a1e7495d57c3668..2d8b28ffc40bbb890e6e2cdfcc5ce7445be54dd1 100644
--- a/gpdb-doc/dita/ref_guide/config_params/guc-list.xml
+++ b/gpdb-doc/dita/ref_guide/config_params/guc-list.xml
@@ -5054,9 +5054,9 @@
this environment:
- The query runs inside a resource group. The resource group assignment for the query
does not change.
- - The query memory quota is 10 MB per query. The memory is allocated from resource group
- shared memory or global shared memory. The query fails if there is not enough shared
- memory available to fulfill the memory allocation request.
+ - The query memory quota is approximately 10 MB per query. The memory is allocated from
+ resource group shared memory or global shared memory. The query fails if there is not
+ enough shared memory available to fulfill the memory allocation request.
This parameter can be set for a session. The parameter cannot be set within a transaction
or a function.