diff --git a/contrib/auth_delay/auth_delay.c b/contrib/auth_delay/auth_delay.c
index 4e0d5959d1..3131e827b8 100644
--- a/contrib/auth_delay/auth_delay.c
+++ b/contrib/auth_delay/auth_delay.c
@@ -59,7 +59,7 @@ _PG_init(void)
 							NULL,
 							&auth_delay_milliseconds,
 							0,
-							0, INT_MAX,
+							0, INT_MAX / 1000,
 							PGC_SIGHUP,
 							GUC_UNIT_MS,
 							NULL,
diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c
index 54461c830f..81cf136937 100644
--- a/src/backend/utils/misc/guc.c
+++ b/src/backend/utils/misc/guc.c
@@ -1466,7 +1466,7 @@ static struct config_int ConfigureNamesInt[] =
 			GUC_UNIT_S
 		},
 		&XLogArchiveTimeout,
-		0, 0, INT_MAX,
+		0, 0, INT_MAX / 2,
 		NULL, NULL, NULL
 	},
 	{
@@ -1476,7 +1476,7 @@ static struct config_int ConfigureNamesInt[] =
 			GUC_NOT_IN_SAMPLE | GUC_UNIT_S
 		},
 		&PostAuthDelay,
-		0, 0, INT_MAX,
+		0, 0, INT_MAX / 1000000,
 		NULL, NULL, NULL
 	},
 	{