diff --git a/dot_config/herbstluftwm/executable_panel-generator b/dot_config/herbstluftwm/executable_panel-generator
index 8608650..96a4b44 100644
--- a/dot_config/herbstluftwm/executable_panel-generator
+++ b/dot_config/herbstluftwm/executable_panel-generator
@@ -52,7 +52,7 @@ check_df() {
 
     if [[ "$root_dev" != "$home_dev" ]]
     then
-        df+="	$USER:$(df --output pcent "$HOME" | tail -n+2 | xargs)"
+        df+="	$USER:$(df --output=pcent "$HOME" | tail -n+2 | xargs)"
     fi
 
     update df "$df"