diff --git a/navipy/database/__init__.py b/navipy/database/__init__.py
index 9ecfeabe979e4f14d2a5eb4fb9454c1d4f913968..b3107011db03e6fec88488956618bf6750f9bd44 100644
--- a/navipy/database/__init__.py
+++ b/navipy/database/__init__.py
@@ -390,7 +390,8 @@ database
             if np.max(cimage) != cmax:
                 print(cmaxminrange.name)
             #    raise ValueError(
-            #        'denormalisation failed {}!={}'.format(np.max(cimage), cmax))
+            #        'denormalisation failed {}!={}
+            # '.format(np.max(cimage), cmax))
         return denormed_im
 
 
diff --git a/navipy/moving/agent.py b/navipy/moving/agent.py
index 996154212c24d4a83c9791dfbcffac1ac47d4c12..f9d429a9a45761dec7195e0630c7651fd406343c 100644
--- a/navipy/moving/agent.py
+++ b/navipy/moving/agent.py
@@ -6,7 +6,6 @@ import pandas as pd
 import networkx as nx
 import multiprocessing
 from multiprocessing import Queue, JoinableQueue, Process
-import queue
 import inspect
 from pandas.api.types import is_numeric_dtype
 from navipy.database import DataBaseLoad