diff --git a/manual/opencs/.gitignore b/manual/opencs/.gitignore
index 12930f58e..cf62bd6fc 100644
--- a/manual/opencs/.gitignore
+++ b/manual/opencs/.gitignore
@@ -1,4 +1,5 @@
 *.backup
 *.aux
 *.log
-*.toc
\ No newline at end of file
+*.toc
+*.pdf
\ No newline at end of file