diff --git a/lib/training/lr_finder.py b/lib/training/lr_finder.py
index d7c3298..2ed81a3 100644
--- a/lib/training/lr_finder.py
+++ b/lib/training/lr_finder.py
@@ -132,7 +132,8 @@ class LearningRateFinder:
         for idx in pbar:
             model_inputs, model_targets = self._feeder.get_batch()
             loss: list[float] = self._model.model.train_on_batch(model_inputs, y=model_targets)
-            if np.isnan(loss[0]):
+            if any(np.isnan(x) for x in loss):
+                logger.warning("NaN detected! Exiting early")
                 break
             self._on_batch_end(idx, loss[0])
             self._update_description(pbar)