diff --git a/src/backend/access/common/reloptions.c b/src/backend/access/common/reloptions.c
index 797be63c44b..7448c7f30fe 100644
--- a/src/backend/access/common/reloptions.c
+++ b/src/backend/access/common/reloptions.c
@@ -275,7 +275,7 @@ static relopt_int intRelOpts[] =
 			RELOPT_KIND_HEAP,
 			AccessExclusiveLock
 		},
-		-1, 0, MAX_BACKENDS
+		-1, 0, 1024
 	},
 
 	/* list terminator */
diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c
index 752f823a164..e246a9c2f0b 100644
--- a/src/backend/utils/misc/guc.c
+++ b/src/backend/utils/misc/guc.c
@@ -2662,7 +2662,7 @@ static struct config_int ConfigureNamesInt[] =
 			NULL
 		},
 		&max_parallel_degree,
-		2, 0, MAX_BACKENDS,
+		2, 0, 1024,
 		NULL, NULL, NULL
 	},