diff --git a/python/obitools3/commands/test.pyx b/python/obitools3/commands/test.pyx
index 3c56320..e819074 100755
--- a/python/obitools3/commands/test.pyx
+++ b/python/obitools3/commands/test.pyx
@@ -301,8 +301,8 @@ def fill_column(config, infos, col) :
 def create_random_column(config, infos) :
     alias = random.choice([b'', random_unique_name(infos)])
     tuples = random.choice([True, False])
+    dict_column = False
     if not tuples :
-        dict_column = random.choice([True, False])
         nb_elements_per_line=random.randint(1, config['test']['maxelts'])
         if nb_elements_per_line > 1:
             dict_column = True
@@ -311,7 +311,6 @@ def create_random_column(config, infos) :
             elements_names.append(random_unique_element_name(config, infos))
         elements_names = random.choice([None, elements_names])
     else :
-        dict_column = False
         nb_elements_per_line = 1
         elements_names = None
     name = random_unique_name(infos)