diff --git a/src/interfaces/libpq/fe-protocol3.c b/src/interfaces/libpq/fe-protocol3.c
index e85975d944f..d09b36e9123 100644
--- a/src/interfaces/libpq/fe-protocol3.c
+++ b/src/interfaces/libpq/fe-protocol3.c
@@ -39,7 +39,7 @@
  */
 #define VALID_LONG_MESSAGE_TYPE(id) \
 	((id) == 'T' || (id) == 'D' || (id) == 'd' || (id) == 'V' || \
-	 (id) == 'E' || (id) == 'N' || (id) == 'A')
+	 (id) == 'E' || (id) == 'N' || (id) == 'A' || (id) == 't')
 
 
 static void handleSyncLoss(PGconn *conn, char id, int msgLength);