diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c
index 203f2026633..597ac8885e0 100644
--- a/src/backend/utils/misc/guc.c
+++ b/src/backend/utils/misc/guc.c
@@ -1722,7 +1722,7 @@ static struct config_int ConfigureNamesInt[] =
 			GUC_UNIT_XBLOCKS
 		},
 		&XLOGbuffers,
-		8, 4, INT_MAX, NULL, NULL
+		8, 4, (INT_MAX / XLOG_BLCKSZ), NULL, NULL
 	},
 
 	{