diff --git a/src/test/regress/expected/null_parameters.out b/src/test/regress/expected/null_parameters.out
index 8f6c17922..578e21fb9 100644
--- a/src/test/regress/expected/null_parameters.out
+++ b/src/test/regress/expected/null_parameters.out
@@ -1575,6 +1575,10 @@ DEBUG:  Plan is router executable
      0
 (1 row)
 
+-- it seems that sometimes the pruning is deferred and sometimes not.
+-- what we care about is that this doesn't crash and the log for this
+-- one shouldn't matter. This is to prevent this test being from flaky.
+SET client_min_messages to ERROR;
 EXECUTE null_select_on_json_param(NULL);
  count
 ---------------------------------------------------------------------
diff --git a/src/test/regress/sql/null_parameters.sql b/src/test/regress/sql/null_parameters.sql
index bb2d8fc9f..0fab8e790 100644
--- a/src/test/regress/sql/null_parameters.sql
+++ b/src/test/regress/sql/null_parameters.sql
@@ -309,6 +309,10 @@ EXECUTE null_select_on_json_param(NULL);
 EXECUTE null_select_on_json_param(NULL);
 EXECUTE null_select_on_json_param(NULL);
 EXECUTE null_select_on_json_param(NULL);
+-- it seems that sometimes the pruning is deferred and sometimes not.
+-- what we care about is that this doesn't crash and the log for this
+-- one shouldn't matter. This is to prevent this test being from flaky.
+SET client_min_messages to ERROR;
 EXECUTE null_select_on_json_param(NULL);
 
 SET client_min_messages TO ERROR;