diff --git a/src/display.rs b/src/display.rs
index f7d6a49..752f12c 100644
--- a/src/display.rs
+++ b/src/display.rs
@@ -20,6 +20,7 @@ impl DisplayData {
         }
     }
 
+    #[allow(clippy::collapsible_if)]
     fn get_tree_chars(
         &self,
         num_siblings: u64,