diff --git a/src/main/thrift/parquet.thrift b/src/main/thrift/parquet.thrift
index 49ca2566..07ea3fbc 100644
--- a/src/main/thrift/parquet.thrift
+++ b/src/main/thrift/parquet.thrift
@@ -505,7 +505,7 @@ struct GeometryType {
   2: required Edges edges;
   /**
    * CRS (coordinate reference system) is a mapping of how coordinates refer to
-   * precise locations on earth. A crs is specified by a string, which is a Parquet
+   * precise locations on earth. A CRS is specified by a string, which is a Parquet
    * file metadata field whose value is the CRS representation. An additional field
    * with the suffix '.type' describes the encoding of this CRS representation.
    *