diff --git a/pytorch_lightning/models/trainer.py b/pytorch_lightning/models/trainer.py
index 0cd4d89a0c..c6ddbaafe8 100644
--- a/pytorch_lightning/models/trainer.py
+++ b/pytorch_lightning/models/trainer.py
@@ -24,7 +24,7 @@ from pytorch_lightning.utils.debugging import MisconfigurationException
 try:
     from apex import amp
     APEX_AVAILABLE = True
-except ModuleNotFoundError:
+except ModuleNotFoundError: # pragma: no cover
     APEX_AVAILABLE = False
 
 
diff --git a/setup.cfg b/setup.cfg
index 8d4afaee71..1efb021f92 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -30,6 +30,7 @@ exclude_lines =
     print(e)
     print(traceback.print_exc())
     return *
+    raise Exception
 
 omit =
     pytorch_lightning/callbacks/pt_callbacks.py