diff --git a/NT/.cvsignore b/NT/.cvsignore
index cb995873dd5ed69744b4834996a50c025d37121b..db9295057803e94328a05ece1635813973cb93c3 100644
--- a/NT/.cvsignore
+++ b/NT/.cvsignore
@@ -1,4 +1,5 @@
 *.bat
+*.err
 *.lk
 *.o
 Makefile
@@ -26,3 +27,4 @@ test3.mk1
 test3.tgt
 test4.c
 testsuite
+y.output
diff --git a/NT/.gitignore b/NT/.gitignore
index 95aa3ebd8e92ad7114e7f06a1f7ce11691308add..64c3d142e39174304fa31e0cc4da000e60ba9b73 100644
--- a/NT/.gitignore
+++ b/NT/.gitignore
@@ -1,4 +1,5 @@
 /*.bat
+/*.err
 /*.lk
 /*.o
 /Makefile
@@ -26,3 +27,4 @@
 /test3.tgt
 /test4.c
 /testsuite
+/y.output