diff --git a/highlighters/main/test-data/sudo-longopt.zsh b/highlighters/main/test-data/sudo-longopt.zsh
index 697f555..ef768bf 100644
--- a/highlighters/main/test-data/sudo-longopt.zsh
+++ b/highlighters/main/test-data/sudo-longopt.zsh
@@ -28,6 +28,7 @@
 # vim: ft=zsh sw=2 ts=2 et
 # -------------------------------------------------------------------------------------------------
 
+hash sudo='false'
 BUFFER='sudo --askpass ls'
 
 expected_region_highlight=(