diff --git a/.gitignore b/.gitignore
index bf53c6e..4e7b659 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,3 +14,4 @@ public/css/styles.css.save
 .project
 public/tinymce/jscripts/tiny_mce/plugins/tiny_mce_wiris/formulas/*.xml
 public/tinymce/jscripts/tiny_mce/plugins/tiny_mce_wiris/cache/*.png
+.physics