diff --git a/torchgeo/datasets/landcoverai.py b/torchgeo/datasets/landcoverai.py
index 3a5302e1e..a513a3407 100644
--- a/torchgeo/datasets/landcoverai.py
+++ b/torchgeo/datasets/landcoverai.py
@@ -74,6 +74,11 @@ class LandCoverAI(VisionDataset):
             transforms: a function/transform that takes input sample and its target as
                 entry and returns a transformed version
             download: if True, download dataset and store it in the root directory
+
+        Raises:
+            AssertionError: if ``split`` argument is invalid
+            RuntimeError: if ``download=False`` and data is not found, or checksums
+                don't match
         """
         assert split in ["train", "val", "test"]
 
diff --git a/torchgeo/datasets/nwpu.py b/torchgeo/datasets/nwpu.py
index c66f9ac6d..b293114ee 100644
--- a/torchgeo/datasets/nwpu.py
+++ b/torchgeo/datasets/nwpu.py
@@ -93,6 +93,11 @@ class VHR10(VisionDataset):
             transforms: a function/transform that takes input sample and its target as
                 entry and returns a transformed version
             download: if True, download dataset and store it in the root directory
+
+        Raises:
+            AssertionError: if ``split`` argument is invalid
+            RuntimeError: if ``download=False`` and data is not found, or checksums
+                don't match
         """
         assert split in ["positive", "negative"]