diff --git a/src/pygenstability/pygenstability.py b/src/pygenstability/pygenstability.py
index e9be998..0eda967 100644
--- a/src/pygenstability/pygenstability.py
+++ b/src/pygenstability/pygenstability.py
@@ -37,7 +37,7 @@
     from pygenstability import generalized_louvain
 
     _NO_LOUVAIN = False
-except ImportError:
+except ImportError:  # pragma: no cover
     _NO_LOUVAIN = True
 
 from pygenstability.constructors import load_constructor