diff --git a/Doc/.cvsignore b/Doc/.cvsignore
index 44992026fc5..91d0a29ebf7 100755
--- a/Doc/.cvsignore
+++ b/Doc/.cvsignore
@@ -10,6 +10,7 @@ python-???.*
 *.ilg
 *.pdf
 *.out
+*.bkm
 *.tar.gz
 api
 ext