diff --git a/.gitignore b/.gitignore
index 50a5fc5..2fce631 100644
--- a/.gitignore
+++ b/.gitignore
@@ -40,3 +40,4 @@ README.html
 *.tgz
 *.tar.gz
 foreign/c/primitives/chibi/foreign-c.c
+*.pdf
diff --git a/foreign-c.pdf b/foreign-c.pdf
deleted file mode 100644
index a77ff57..0000000
Binary files a/foreign-c.pdf and /dev/null differ