diff --git a/c_glib/parquet-glib/arrow-file-writer.cpp b/c_glib/parquet-glib/arrow-file-writer.cpp
index bc264bc9f5ec9..6c95488a0e7bd 100644
--- a/c_glib/parquet-glib/arrow-file-writer.cpp
+++ b/c_glib/parquet-glib/arrow-file-writer.cpp
@@ -98,7 +98,7 @@ gparquet_writer_properties_new(void)
  * gparquet_writer_properties_set_compression:
  * @properties: A #GParquetWriterProperties.
  * @compression_type: A #GArrowCompressionType.
- * @path: (nullable): A column path.
+ * @path: (nullable): The column path.
  *
  * Since: 1.0.0
  */
@@ -175,7 +175,7 @@ gparquet_writer_properties_disable_dictionary(GParquetWriterProperties *properti
  */
 gboolean
 gparquet_writer_properties_is_dictionary_enabled(GParquetWriterProperties *properties,
-                                                 gchar *dot_string)
+                                                 const gchar *dot_string)
 {
   auto parquet_properties = gparquet_writer_properties_get_raw(properties);
   auto parquet_column_path = parquet::schema::ColumnPath::FromDotString(dot_string);
diff --git a/c_glib/parquet-glib/arrow-file-writer.h b/c_glib/parquet-glib/arrow-file-writer.h
index 172d5733cf999..25a352237b473 100644
--- a/c_glib/parquet-glib/arrow-file-writer.h
+++ b/c_glib/parquet-glib/arrow-file-writer.h
@@ -39,17 +39,17 @@ GParquetWriterProperties *gparquet_writer_properties_new(void);
 void
 gparquet_writer_properties_set_compression(GParquetWriterProperties *properties,
                                            GArrowCompressionType compression_type,
-                                           gchar *path);
+                                           const gchar *path);
 GArrowCompressionType
 gparquet_writer_properties_get_compression_dot_string(GParquetWriterProperties *properties,
-                                                      gchar *dot_string);
+                                                      const gchar *dot_string);
 void
 gparquet_writer_properties_enable_dictionary(GParquetWriterProperties *properties);
 void
 gparquet_writer_properties_disable_dictionary(GParquetWriterProperties *properties);
 gboolean
 gparquet_writer_properties_is_dictionary_enabled(GParquetWriterProperties *properties,
-                                                 gchar *dot_string);
+                                                 const gchar *dot_string);
 void
 gparquet_writer_properties_set_dictionary_page_size_limit(GParquetWriterProperties *properties,
                                                           gint64 limit);