diff --git a/src/modules/system/.cvsignore b/src/modules/system/.cvsignore
index 6a4a24169a3d21bb662e4f9492bcbe2786749593..b5760cc263fd556b11d68b964501e941696e34a9 100644
--- a/src/modules/system/.cvsignore
+++ b/src/modules/system/.cvsignore
@@ -13,3 +13,4 @@ stamp-h
 stamp-h.in
 system_machine.h
 system_machine.h.in
+add-errnos.h
diff --git a/src/modules/system/.gitignore b/src/modules/system/.gitignore
index f01c50ae53302c161da5f8a96797dd179fd938bd..5096427aa03db9fcd6cd2837d0a2f84e65a75c6f 100644
--- a/src/modules/system/.gitignore
+++ b/src/modules/system/.gitignore
@@ -13,3 +13,4 @@
 /stamp-h.in
 /system_machine.h
 /system_machine.h.in
+/add-errnos.h