diff --git a/misp_modules/modules/import_mod/cof2misp.py b/misp_modules/modules/import_mod/cof2misp.py
index 018ad9f..3fe36fc 100755
--- a/misp_modules/modules/import_mod/cof2misp.py
+++ b/misp_modules/modules/import_mod/cof2misp.py
@@ -173,7 +173,7 @@ def is_dnsdbflex(data: str) -> bool:
                 return False            # shortcut. We assume it's not if a single line does not conform
         return True
     except Exception as ex:
-        print("oops, this should not have happened. Maybe not an ndjson file? Reason: %s" % (str(ex),), file=sys.sterr)
+        print("oops, this should not have happened. Maybe not an ndjson file? Reason: %s" % (str(ex),), file=sys.stderr)
         return False