--- a/py/gadict_c5.py	Sat Oct 14 00:58:58 2017 +0300
+++ b/py/gadict_c5.py	Sat Oct 14 00:59:18 2017 +0300
@@ -124,7 +124,7 @@
             l = ["«"+x+"»" for x in hw.attrs]
             l.sort()
             FOUT.write(", ".join(l))
-        if hw.homo in not None and len(hw.homo) > 0:
+        if hw.homo is not None and len(hw.homo) > 0:
             FOUT.write(" homo: ")
             l = ["{"+x+"}" for x in hw.homo]
             l.sort()