diff --git a/t/028_temp_block.pl b/t/028_temp_block.pl
index c1554d1..567fc68 100644
--- a/t/028_temp_block.pl
+++ b/t/028_temp_block.pl
@@ -91,13 +91,16 @@ is($stdout,'t',"Check: temp_blks_read should not be 0.");
 trim($stdout);
 is($stdout,'t',"Check: temp_blks_written should not be 0.");
 
-($cmdret, $stdout, $stderr) = $node->psql('postgres', 'SELECT SUM(PGSM.temp_blk_read_time) != 0 FROM pg_stat_monitor AS PGSM WHERE PGSM.query LIKE \'%FROM t1%\';', extra_params => ['-Pformat=unaligned','-Ptuples_only=on']);
-trim($stdout);
-is($stdout,'t',"Check: temp_blk_read_time should not be 0.");
+if ($PGSM::PG_MAJOR_VERSION >= 15)
+{
+    ($cmdret, $stdout, $stderr) = $node->psql('postgres', 'SELECT SUM(PGSM.temp_blk_read_time) != 0 FROM pg_stat_monitor AS PGSM WHERE PGSM.query LIKE \'%FROM t1%\';', extra_params => ['-Pformat=unaligned','-Ptuples_only=on']);
+    trim($stdout);
+    is($stdout,'t',"Check: temp_blk_read_time should not be 0.");
 
-($cmdret, $stdout, $stderr) = $node->psql('postgres', 'SELECT SUM(PGSM.temp_blk_write_time) != 0 FROM pg_stat_monitor AS PGSM WHERE PGSM.query LIKE \'%FROM t1%\'', extra_params => ['-Pformat=unaligned','-Ptuples_only=on']);
-trim($stdout);
-is($stdout,'t',"Check: temp_blk_write_time should not be 0.");
+    ($cmdret, $stdout, $stderr) = $node->psql('postgres', 'SELECT SUM(PGSM.temp_blk_write_time) != 0 FROM pg_stat_monitor AS PGSM WHERE PGSM.query LIKE \'%FROM t1%\'', extra_params => ['-Pformat=unaligned','-Ptuples_only=on']);
+    trim($stdout);
+    is($stdout,'t',"Check: temp_blk_write_time should not be 0.");
+}
 
 # DROP EXTENSION
 $stdout = $node->safe_psql('postgres', 'DROP EXTENSION pg_stat_monitor;', extra_params => ['-a']);