diff --git a/.gitignore b/.gitignore
index b8ba74bb5afca94a0aeab915d86f0c5570898988..253d4031aa404eca7f7c5628441242142ae48bf9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -26,3 +26,6 @@ pip-log.txt
 
 #Translations
 *.mo
+
+# Generated cffi files
+nacl/_cffi_*.c