diff --git a/src/import-export/csv-import/gnc-csv-model.c b/src/import-export/csv-import/gnc-csv-model.c
index 10cf016af2..ce8050dbda 100644
--- a/src/import-export/csv-import/gnc-csv-model.c
+++ b/src/import-export/csv-import/gnc-csv-model.c
@@ -354,7 +354,9 @@ void gnc_csv_parse_data_free(GncCsvParseData* parse_data)
     /* All non-NULL pointers have been initialized and must be freed. */
 
     if (parse_data->raw_mapping != NULL)
-        g_mapped_file_free(parse_data->raw_mapping);
+    {
+        g_mapped_file_unref(parse_data->raw_mapping);
+    }
 
     if (parse_data->file_str.begin != NULL)
         g_free(parse_data->file_str.begin);