diff --git a/etc/shell/hstr/hstr_blacklist b/etc/shell/hstr/hstr_blacklist
index 9b40ab1..239c00b 100644
--- a/etc/shell/hstr/hstr_blacklist
+++ b/etc/shell/hstr/hstr_blacklist
@@ -28,6 +28,7 @@ docker images
 ..
 .-
 g add .
+z
 ~
 reload
 :q
@@ -45,3 +46,4 @@ ls
 g st .
 su
 shutdown -h now
+tt