diff --git a/src/ui/window.rs b/src/ui/window.rs
index 42a3034..3e48c9e 100644
--- a/src/ui/window.rs
+++ b/src/ui/window.rs
@@ -697,7 +697,6 @@ mod imp {
 
                             let mut css = String::new();
                             css.push_str(":root {");
-                            let n_colors = palette.len();
                             for (i, color) in palette
                                 .into_iter()
                                 .map(|c| {