diff --git a/src/baskerville/scripts/hound_data_align.py b/src/baskerville/scripts/hound_data_align.py
index b32a1c7..e5226b0 100755
--- a/src/baskerville/scripts/hound_data_align.py
+++ b/src/baskerville/scripts/hound_data_align.py
@@ -537,13 +537,8 @@ def break_large_contigs(contigs, break_t, verbose=False):
 
             # break in two
             ctg_mid = ctg.start + ctg_len // 2
-
-            try:
-                ctg_left = Contig(ctg.genome, ctg.chr, ctg.start, ctg_mid)
-                ctg_right = Contig(ctg.genome, ctg.chr, ctg_mid, ctg.end)
-            except AttributeError:
-                ctg_left = Contig(ctg.chr, ctg.start, ctg_mid)
-                ctg_right = Contig(ctg.chr, ctg_mid, ctg.end)
+            ctg_left = Contig(ctg.genome, ctg.chr, ctg.start, ctg_mid)
+            ctg_right = Contig(ctg.genome, ctg.chr, ctg_mid, ctg.end)
 
             # add left
             ctg_left_len = ctg_left.end - ctg_left.start