diff --git a/src/compare/compare_field.rs b/src/compare/compare_field.rs
index ed15224..797f1ef 100644
--- a/src/compare/compare_field.rs
+++ b/src/compare/compare_field.rs
@@ -484,8 +484,11 @@ pub(crate) fn compare_property_list_of_list_of_list_of_ast_nodes<
             if rust_optional.len() != middle_value.len() {
                 let this_status = DiffStatus::Bad;
                 let message = Some(format!(
-                    "{} mismatch (emacs != rust) {:?} != {:?}",
-                    emacs_field, value, rust_value
+                    "{} optional value length mismatch (emacs != rust) {} != {} | {:?}",
+                    emacs_field,
+                    middle_value.len(),
+                    rust_optional.len(),
+                    rust_optional
                 ));
                 return Ok(ComparePropertiesResult::SelfChange(this_status, message));
             }
@@ -500,8 +503,11 @@ pub(crate) fn compare_property_list_of_list_of_list_of_ast_nodes<
         if rust_value.len() != mandatory_value.len() {
             let this_status = DiffStatus::Bad;
             let message = Some(format!(
-                "{} mismatch (emacs != rust) {:?} != {:?}",
-                emacs_field, value, rust_value
+                "{} mandatory value length mismatch (emacs != rust) {} != {} | {:?}",
+                emacs_field,
+                mandatory_value.len(),
+                rust_value.len(),
+                rust_value
             ));
             return Ok(ComparePropertiesResult::SelfChange(this_status, message));
         }