diff --git a/src/test/modules/test_json_parser/test_json_parser_incremental.c b/src/test/modules/test_json_parser/test_json_parser_incremental.c
index b2195cb811..0bc047a4af 100644
--- a/src/test/modules/test_json_parser/test_json_parser_incremental.c
+++ b/src/test/modules/test_json_parser/test_json_parser_incremental.c
@@ -89,6 +89,8 @@ main(int argc, char **argv)
 	int			c;
 	bool		need_strings = false;
 
+	pg_logging_init(argv[0]);
+
 	while ((c = getopt(argc, argv, "c:s")) != -1)
 	{
 		switch (c)
diff --git a/src/test/modules/test_json_parser/test_json_parser_perf.c b/src/test/modules/test_json_parser/test_json_parser_perf.c
index f5c0e8dd9a..ea85626cbd 100644
--- a/src/test/modules/test_json_parser/test_json_parser_perf.c
+++ b/src/test/modules/test_json_parser/test_json_parser_perf.c
@@ -43,6 +43,8 @@ main(int argc, char **argv)
 	int			iter;
 	int			use_inc = 0;
 
+	pg_logging_init(argv[0]);
+
 	initStringInfo(&json);
 
 	if (strcmp(argv[1], "-i") == 0)