1 files changed, 7 insertions, 7 deletions
diff --git a/text_recognizer/models/base.py b/text_recognizer/models/base.py
index f8f4b40..4587a30 100644
--- a/text_recognizer/models/base.py
+++ b/text_recognizer/models/base.py
@@ -55,15 +55,13 @@ class LitBase(LightningModule):
 
     def _configure_lr_schedulers(
         self, optimizer: Type[torch.optim.Optimizer]
-    ) -> Dict[str, Any]:
+    ) -> Optional[Dict[str, Any]]:
         """Configures the lr scheduler."""
         log.info(
             f"Instantiating learning rate scheduler <{self.lr_scheduler_config._target_}>"
         )
-        monitor = self.lr_scheduler_config.monitor
-        interval = self.lr_scheduler_config.interval
-        del self.lr_scheduler_config.monitor
-        del self.lr_scheduler_config.interval
+        monitor = self.lr_scheduler_config.pop("monitor")
+        interval = self.lr_scheduler_config.pop("interval")
 
         return {
             "monitor": monitor,
@@ -78,8 +76,10 @@ class LitBase(LightningModule):
     ) -> Dict[str, Any]:
         """Configures optimizer and lr scheduler."""
         optimizer = self._configure_optimizer()
-        scheduler = self._configure_lr_schedulers(optimizer)
-        return {"optimizer": optimizer, "lr_scheduler": scheduler}
+        if self.lr_scheduler_config is not None:
+            scheduler = self._configure_lr_schedulers(optimizer)
+            return {"optimizer": optimizer, "lr_scheduler": scheduler}
+        return {"optimizer": optimizer}
 
     def forward(self, data: Tensor) -> Tensor:
         """Feedforward pass."""