diff --git a/src/ATCDCL/.cvsignore b/src/ATCDCL/.cvsignore
new file mode 100644
index 000000000..282522db0
--- /dev/null
+++ b/src/ATCDCL/.cvsignore
@@ -0,0 +1,2 @@
+Makefile
+Makefile.in