diff --git a/sh/fasd b/sh/fasd
index 4642a25..6e82298 100644
--- a/sh/fasd
+++ b/sh/fasd
@@ -152,7 +152,7 @@ EOS
       zsh-hook) cat <<EOS
 # add zsh hook
 _fasd_preexec() {
-  { fasd --proc \$(fasd --sanitize "\$2") } >> "$_FASD_SINK" 2>&1
+  { fasd --proc \$(fasd --sanitize "\${2:q}") } >> "$_FASD_SINK" 2>&1
 }
 autoload -Uz add-zsh-hook
 add-zsh-hook preexec _fasd_preexec