diff --git a/tests/modules/services/imapnotify/imapnotify.service b/tests/modules/services/imapnotify/imapnotify.service
index 3e3bd9ff6..7f8603cef 100644
--- a/tests/modules/services/imapnotify/imapnotify.service
+++ b/tests/modules/services/imapnotify/imapnotify.service
@@ -3,6 +3,7 @@ WantedBy=default.target
 
 [Service]
 Environment=NOTMUCH_CONFIG=/home/hm-user/.config/notmuch/default/config
+Environment=PATH=
 ExecStart=@goimapnotify@/bin/goimapnotify -conf '/nix/store/00000000000000000000000000000000-imapnotify-hm-example.com-config.json'
 Restart=always
 RestartSec=30