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-rw-r--r--wqflask/wqflask/show_trait/show_trait.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/wqflask/wqflask/show_trait/show_trait.py b/wqflask/wqflask/show_trait/show_trait.py
index edf9638c..25ba1a1d 100644
--- a/wqflask/wqflask/show_trait/show_trait.py
+++ b/wqflask/wqflask/show_trait/show_trait.py
@@ -228,8 +228,8 @@ class ShowTrait(object):
         hddn = OrderedDict()
 
         if self.dataset.group.allsamples:
-            hddn['allsamples'] = ''.join(self.dataset.group.allsamples)
-        hddn['primary_samples'] = ''.join(self.primary_sample_names)
+            hddn['allsamples'] = ','.join(self.dataset.group.allsamples)
+        hddn['primary_samples'] = ','.join(self.primary_sample_names)
         hddn['trait_id'] = self.trait_id
         hddn['trait_display_name'] = self.this_trait.display_name
         hddn['dataset'] = self.dataset.name