diff --git a/rust/parquet/src/arrow/array_reader.rs b/rust/parquet/src/arrow/array_reader.rs
index b3fb27126d85f..650ccbee37830 100644
--- a/rust/parquet/src/arrow/array_reader.rs
+++ b/rust/parquet/src/arrow/array_reader.rs
@@ -896,9 +896,9 @@ impl<'a> ArrayReaderBuilder {
                         >::new(
                             page_iterator, column_desc, converter
                         )?))
-                    } else if let Some(ArrowType::Dictionary(index_type, _)) = arrow_type
+                    } else if let Some(ArrowType::Dictionary(key_type, _)) = arrow_type
                     {
-                        match **index_type {
+                        match **key_type {
                             ArrowType::Int8 => {
                                 let converter =
                                     DictionaryConverter::new(DictionaryArrayConverter {});