diff --git a/weboob/backends/arte/test.py b/weboob/backends/arte/test.py
index 5c19521e..0896e9f5 100644
--- a/weboob/backends/arte/test.py
+++ b/weboob/backends/arte/test.py
@@ -22,7 +22,7 @@ class ArteTest(BackendTest):
     BACKEND = 'arte'
 
     def test_arte(self):
-        l = [v for v in self.backend.iter_search_results('arte')]
+        l = list(self.backend.iter_search_results('arte'))
         if len(l) > 0:
             v = l[0]
             self.backend.fillobj(v, ('url',))
diff --git a/weboob/backends/cragr/test.py b/weboob/backends/cragr/test.py
index d4cfb9f2..825583e9 100644
--- a/weboob/backends/cragr/test.py
+++ b/weboob/backends/cragr/test.py
@@ -22,7 +22,7 @@ class CrAgrTest(BackendTest):
     BACKEND = 'cragr'
 
     def test_cragr(self):
-        l = [a for a in self.backend.iter_accounts()]
+        l = list(self.backend.iter_accounts())
         if len(l) > 0:
             a = l[0]
-            [o for o in self.backend.iter_history(a)]
+            list(self.backend.iter_history(a))
diff --git a/weboob/backends/ina/test.py b/weboob/backends/ina/test.py
index 388774cf..3272cb9b 100644
--- a/weboob/backends/ina/test.py
+++ b/weboob/backends/ina/test.py
@@ -22,7 +22,7 @@ class INATest(BackendTest):
     BACKEND = 'ina'
 
     def test_ina(self):
-        l = [v for v in self.backend.iter_search_results('chirac')]
+        l = list(self.backend.iter_search_results('chirac'))
         self.assertTrue(len(l) > 0)
         v = l[0]
         self.backend.fillobj(v, ('url',))