diff --git a/src/backend/libpq/auth.c b/src/backend/libpq/auth.c
index 6adf2ee8b0..7ef784e03d 100644
--- a/src/backend/libpq/auth.c
+++ b/src/backend/libpq/auth.c
@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/libpq/auth.c,v 1.33 1999/02/13 23:15:38 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/libpq/auth.c,v 1.34 1999/03/14 16:06:42 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -77,8 +77,8 @@ pg_krb4_recvauth(Port *port)
 {
 	long					krbopts = 0;	/* one-way authentication */
 	KTEXT_ST			clttkt;
-	char					instance[INST_SZ],
-								version[KRB_SENDAUTH_VLEN];
+	char					instance[INST_SZ+1],
+								version[KRB_SENDAUTH_VLEN+1];
 	AUTH_DAT			auth_data;
 	Key_schedule	key_sched;
 	int						status;
diff --git a/src/interfaces/libpq/fe-auth.c b/src/interfaces/libpq/fe-auth.c
index 46d2290135..99f273d2d2 100644
--- a/src/interfaces/libpq/fe-auth.c
+++ b/src/interfaces/libpq/fe-auth.c
@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-auth.c,v 1.26 1999/02/13 23:22:39 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-auth.c,v 1.27 1999/03/14 16:06:43 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -144,8 +144,8 @@ pg_krb4_init()
 static char *
 pg_krb4_authname(char *PQerrormsg)
 {
-	char		instance[INST_SZ];
-	char		realm[REALM_SZ];
+	char		instance[INST_SZ+1];
+	char		realm[REALM_SZ+1];
 	int			status;
 	static char name[SNAME_SZ + 1] = "";