diff --git a/xmask/madx_model.py b/xmask/madx_model.py
index 236d065..cd0a0ce 100644
--- a/xmask/madx_model.py
+++ b/xmask/madx_model.py
@@ -159,7 +159,7 @@ def configure_b4_from_b2(sequence_b4, sequence_b2,
     for nn in b2_dep.keys():
         if str(nn) in list(update_globals.keys()):
             continue
-        assert str(b4_dep[nn]) == str(b2_dep[nn])
+        assert str(b4_dep[nn]).replace(" ","") == str(b2_dep[nn]).replace(" ","")
 
     for nn in b4_dep.keys():
         if nn not in b2_dep.keys():
@@ -352,4 +352,4 @@ def _extract_parameters(my_string):
             'ranf',
             'gauss',
             'tgauss']))
-        return my_list
\ No newline at end of file
+        return my_list