diff --git a/python/obitools3/commands/align.pyx b/python/obitools3/commands/align.pyx
index 20ca5de..82fc2ef 100644
--- a/python/obitools3/commands/align.pyx
+++ b/python/obitools3/commands/align.pyx
@@ -158,7 +158,7 @@ def run(config):
     i_view_name = i_uri.split(b"/")[0]
     i_column_name = b""
     i_element_name = b""
-    if len(i_uri.split(b"/")) == 2:
+    if len(i_uri.split(b"/")) >= 2:
         i_column_name = i_uri.split(b"/")[1]
     if len(i_uri.split(b"/")) == 3:
         i_element_name = i_uri.split(b"/")[2]
@@ -181,7 +181,7 @@ def run(config):
         i_dms_name_2 = i_dms_2.name
         i_uri_2 = input_2[1]
         original_i_view_name_2 = i_uri_2.split(b"/")[0]
-        if len(i_uri_2.split(b"/")) == 2:
+        if len(i_uri_2.split(b"/")) >= 2:
             i_column_name_2 = i_uri_2.split(b"/")[1]
         if len(i_uri_2.split(b"/")) == 3:
             i_element_name_2 = i_uri_2.split(b"/")[2]