diff --git a/elasticparser/elastic_parser.py b/elasticparser/elastic_parser.py
index daaeb62c8fd838680d5eb72c515f2e65061cf5ae..67311ba54122d1a952d9e80d5e7b1f0b8956182a 100644
--- a/elasticparser/elastic_parser.py
+++ b/elasticparser/elastic_parser.py
@@ -183,6 +183,6 @@ class ElasticParserInterface:
         sec_workflow = self.archive.m_create(Workflow)
         sec_workflow.workflow_type = 'elastic'
         sec_elastic = sec_workflow.m_create(Elastic)
-        sec_elastic.elastic_calculation_method = self.properties.info['calculation_method']
+        sec_elastic.elastic_calculation_method = self.properties.info['calculation_method'].lower()
         sec_elastic.elastic_constants_order = self.properties.info['order']
         sec_elastic.strain_maximum = self.properties.info['max_strain']