diff --git a/.gitignore b/.gitignore
index 69da308c71..bc55957536 100644
--- a/.gitignore
+++ b/.gitignore
@@ -56,6 +56,8 @@ lib/cmake_install.cmake
 
 Documentation/Examples/*.generated
 
+arangod/Aql/grammar.output
+
 UnitTests/HttpInterface/logs/
 
 bin/