diff --git a/Cantera/cxx/include/.cvsignore b/Cantera/cxx/include/.cvsignore
new file mode 100644
index 000000000..25ddf91d9
--- /dev/null
+++ b/Cantera/cxx/include/.cvsignore
@@ -0,0 +1,2 @@
+Cantera_bt.mak
+Cantera.mak