diff --git a/pyerrors/input/hadrons.py b/pyerrors/input/hadrons.py
index 0c8dc11d..e4671933 100644
--- a/pyerrors/input/hadrons.py
+++ b/pyerrors/input/hadrons.py
@@ -1,5 +1,4 @@
 import os
-import warnings
 from collections import Counter
 import h5py
 from pathlib import Path