diff --git a/src/rod/__init__.py b/src/rod/__init__.py
index 2d65e22..a3f3b50 100644
--- a/src/rod/__init__.py
+++ b/src/rod/__init__.py
@@ -68,9 +68,9 @@ def get_default_logging_level(env_var: str) -> logging.LoggingLevel:
         return logging.LoggingLevel[os.environ[env_var].upper()]
 
     # Raise if the environment variable is set but the logging level is invalid.
-    except AttributeError:
+    except AttributeError as exc:
         msg = f"Invalid logging level defined in {env_var}: '{os.environ[env_var]}'"
-        raise ValueError(msg)
+        raise ValueError(msg) from exc
 
     # If the environment variable is not set, return the logging level depending
     # on the installation mode.