diff --git a/src/_bento4 b/src/_bento4
index 12efb31..455aef5 100644
--- a/src/_bento4
+++ b/src/_bento4
@@ -306,7 +306,7 @@ case $service in
 esac
 
 _arguments \
-  $options[@] \
+  "${options[@]}" \
   "*::file:_files"
 
 # Local Variables: