diff --git a/columnar/src/columnar/column_type.rs b/columnar/src/columnar/column_type.rs
index ad1fcb2c0..6f9cf99e5 100644
--- a/columnar/src/columnar/column_type.rs
+++ b/columnar/src/columnar/column_type.rs
@@ -147,21 +147,6 @@ mod tests {
         }
     }
 
-    #[test]
-    fn test_column_category_sort_consistent_with_column_type_sort() {
-        // This is a very important property because we
-        // we need to serialize colunmn in the right order.
-        let mut column_types: Vec<ColumnType> = super::COLUMN_TYPES.iter().copied().collect();
-        column_types.sort_by_key(|col| col.to_code());
-        let column_categories: Vec<ColumnTypeCategory> = column_types
-            .into_iter()
-            .map(ColumnTypeCategory::from)
-            .collect();
-        for (prev, next) in column_categories.iter().zip(column_categories.iter()) {
-            assert!(prev <= next);
-        }
-    }
-
     #[test]
     fn test_cardinality_to_code() {
         let mut num_cardinality = 0;
diff --git a/columnar/src/columnar/writer/mod.rs b/columnar/src/columnar/writer/mod.rs
index dfd3acbb8..43d3f6620 100644
--- a/columnar/src/columnar/writer/mod.rs
+++ b/columnar/src/columnar/writer/mod.rs
@@ -45,7 +45,7 @@ struct SpareBuffers {
 /// columnar_writer.record_str(1u32 /* doc id */, "product_name", "Apple");
 /// columnar_writer.record_numerical(0u32 /* doc id */, "price", 10.5f64); //< uh oh we ended up mixing integer and floats.
 /// let mut wrt: Vec<u8> =  Vec::new();
-/// columnar_writer.serialize(2u32, &mut wrt).unwrap();
+/// columnar_writer.serialize(2u32, None, &mut wrt).unwrap();
 /// ```
 pub struct ColumnarWriter {
     numerical_field_hash_map: ArenaHashMap,