diff --git a/src/io/parquet/read/deserialize/fixed_size_binary/basic.rs b/src/io/parquet/read/deserialize/fixed_size_binary/basic.rs
index 59e171fb657..afcb72bf4e4 100644
--- a/src/io/parquet/read/deserialize/fixed_size_binary/basic.rs
+++ b/src/io/parquet/read/deserialize/fixed_size_binary/basic.rs
@@ -57,6 +57,7 @@ impl<'a> Required<'a> {
     }
 }
 
+#[derive(Debug)]
 struct FilteredRequired<'a> {
     pub values: SliceFilteredIter<std::slice::ChunksExact<'a, u8>>,
 }