diff --git a/src/backend/libpq/hba.c b/src/backend/libpq/hba.c
index 327a4b42af7..09c0b421c32 100644
--- a/src/backend/libpq/hba.c
+++ b/src/backend/libpq/hba.c
@@ -54,7 +54,7 @@
 #endif
 
 
-#define MAX_TOKEN	256
+#define MAX_TOKEN	10240
 
 /* callback data for check_network_callback */
 typedef struct check_network_data