diff --git a/torchvision/models/detection/generalized_rcnn.py b/torchvision/models/detection/generalized_rcnn.py
index f02f2b33928..37ef1820d71 100644
--- a/torchvision/models/detection/generalized_rcnn.py
+++ b/torchvision/models/detection/generalized_rcnn.py
@@ -36,22 +36,15 @@ def __init__(self, backbone: nn.Module, rpn: nn.Module, roi_heads: nn.Module, tr
         self._has_warned = False
 
     @torch.jit.unused
-    def eager_outputs(
-        self,
-        losses: Dict[str, Tensor],
-        detections: List[Dict[str, Tensor]],
-    ) -> Union[Dict[str, Tensor], List[Dict[str, Tensor]]]:
-
+    def eager_outputs(self, losses, detections):
+        # type: (Dict[str, Tensor], List[Dict[str, Tensor]]) -> Union[Dict[str, Tensor], List[Dict[str, Tensor]]]
         if self.training:
             return losses
 
         return detections
 
-    def forward(
-        self,
-        images: List[Tensor],
-        targets: Optional[List[Dict[str, Tensor]]] = None,
-    ) -> Union[Tuple[Dict[str, Tensor], List[Dict[str, Tensor]]], Dict[str, Tensor], List[Dict[str, Tensor]]]:
+    def forward(self, images, targets=None):
+        # type: (List[Tensor], Optional[List[Dict[str, Tensor]]]) -> Tuple[Dict[str, Tensor], List[Dict[str, Tensor]]]
         """
         Args:
             images (list[Tensor]): images to be processed