diff --git a/functions/__fisher_purge.fish b/functions/__fisher_purge.fish
new file mode 100644
index 0000000..8adaff8
--- /dev/null
+++ b/functions/__fisher_purge.fish
@@ -0,0 +1,7 @@
+function __fisher_purge
+  set -l FISH_CONFIG "$~/.config/fish/config.fish"
+  sed -E '/set ($fisher_home|$fisher_config) /d;/source \$$fisher_home/d' \
+	$FISH_CONFIG > $FISH_CONFIG.tmp
+	mv $FISH_CONFIG.tmp $FISH_CONFIG
+	echo "Reload your shell to apply changes."
+end