diff --git a/src/backend/libpq/auth.c b/src/backend/libpq/auth.c
index 466b3640e8..9a1ae66f03 100644
--- a/src/backend/libpq/auth.c
+++ b/src/backend/libpq/auth.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/libpq/auth.c,v 1.183.2.1 2009/10/14 07:27:27 heikki Exp $
+ *	  $PostgreSQL: pgsql/src/backend/libpq/auth.c,v 1.183.2.2 2009/10/14 22:10:01 heikki Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -182,7 +182,7 @@ static int	pg_SSPI_recvauth(Port *port);
 
 
 /*
- * Maximum size of GSS and SSPI authentication tokens.
+ * Maximum accepted size of GSS and SSPI authentication tokens.
  *
  * Kerberos tickets are usually quite small, but the TGTs issued by Windows
  * domain controllers include an authorization field known as the Privilege
@@ -194,7 +194,7 @@ static int	pg_SSPI_recvauth(Port *port);
  * registry setting. Microsoft recommends that it is not set higher than
  * 65535 bytes, so that seems like a reasonable limit for us as well.
  */
-#define MAX_AUTH_TOKEN_LENGTH	65535
+#define PG_MAX_AUTH_TOKEN_LENGTH	65535
 
 
 /*----------------------------------------------------------------
@@ -952,7 +952,7 @@ pg_GSS_recvauth(Port *port)
 
 		/* Get the actual GSS token */
 		initStringInfo(&buf);
-		if (pq_getmessage(&buf, MAX_AUTH_TOKEN_LENGTH))
+		if (pq_getmessage(&buf, PG_MAX_AUTH_TOKEN_LENGTH))
 		{
 			/* EOF - pq_getmessage already logged error */
 			pfree(buf.data);
@@ -1190,7 +1190,7 @@ pg_SSPI_recvauth(Port *port)
 
 		/* Get the actual SSPI token */
 		initStringInfo(&buf);
-		if (pq_getmessage(&buf, MAX_AUTH_TOKEN_LENGTH))
+		if (pq_getmessage(&buf, PG_MAX_AUTH_TOKEN_LENGTH))
 		{
 			/* EOF - pq_getmessage already logged error */
 			pfree(buf.data);