diff --git a/app/assets/javascripts/samples/sample_datatable.js.erb b/app/assets/javascripts/samples/sample_datatable.js.erb
index ebd639696..4a00e6d91 100644
--- a/app/assets/javascripts/samples/sample_datatable.js.erb
+++ b/app/assets/javascripts/samples/sample_datatable.js.erb
@@ -459,6 +459,9 @@ function onClickEdit() {
 
             // Adjust columns width in table header
             table.columns.adjust();
+            $("select[name=sample_type_id]").on('change', function(){
+              table.columns.adjust();
+            });
         },
         error: function (e, data, status, xhr) {
             if (e.status == 403) {