diff --git a/pyerrors/input/openQCD.py b/pyerrors/input/openQCD.py
index 9f72f948..a274514c 100644
--- a/pyerrors/input/openQCD.py
+++ b/pyerrors/input/openQCD.py
@@ -945,7 +945,7 @@ def _read_flow_obs(path: str, prefix: str, c: float, dtr_cnfg: int=1, version: s
             else:
                 if steps != traj_list[1] - traj_list[0]:
                     raise Exception("steps and the found stepsize are not the same")
-                
+
         configlist.append([tr // steps // dtr_cnfg for tr in traj_list])
         if configlist[-1][0] > 1:
             offset = configlist[-1][0] - 1