diff --git a/preferences.zsh b/preferences.zsh
index 9f6c842..88c9ee1 100644
--- a/preferences.zsh
+++ b/preferences.zsh
@@ -1 +1,5 @@
+# Ignore these file extensions in tab completions
+fignore=(.class)
+
+# Set env vars according to the installed programs
 nvim -v 2>&1 >/dev/null && export EDITOR=nvim