diff --git a/multimolecule/datasets/eternabench_external/eternabench_external.py b/multimolecule/datasets/eternabench_external/eternabench_external.py
index 6e21af27..2e6f56a8 100644
--- a/multimolecule/datasets/eternabench_external/eternabench_external.py
+++ b/multimolecule/datasets/eternabench_external/eternabench_external.py
@@ -48,8 +48,7 @@ def convert_dataset_(df: pd.DataFrame):
 
 def convert_dataset(convert_config):
     df = dl.load_pandas(convert_config.dataset_path)
-    fd = convert_dataset_(df)
-    save_dataset(convert_config, {"test": fd})
+    save_dataset(convert_config, convert_dataset_(df), filename="test.parquet")
 
 
 class ConvertConfig(ConvertConfig_):
diff --git a/multimolecule/datasets/rnacentral/README.md b/multimolecule/datasets/rnacentral/README.md
index faa6e2f5..97587986 100644
--- a/multimolecule/datasets/rnacentral/README.md
+++ b/multimolecule/datasets/rnacentral/README.md
@@ -93,14 +93,14 @@ This is an UNOFFICIAL release of the [RNAcentral](https://rnacentral.org) by the
 
 ## Variations
 
-This dataset is available in five variants:
+This dataset is available in five additional variants:
 
 - [rnacentral](https://huggingface.co/datasets/multimolecule/rnacentral): The main RNAcentral dataset.
-- [rnacentral-512](https://huggingface.co/datasets/multimolecule/rnacentral-1024): RNAcentral dataset with all sequences truncated to 512 nucleotides.
-- [rnacentral-1024](https://huggingface.co/datasets/multimolecule/rnacentral-1024): RNAcentral dataset with all sequences truncated to 1024 nucleotides.
-- [rnacentral-2048](https://huggingface.co/datasets/multimolecule/rnacentral-2048): RNAcentral dataset with all sequences truncated to 2048 nucleotides.
-- [rnacentral-4096](https://huggingface.co/datasets/multimolecule/rnacentral-4096): RNAcentral dataset with all sequences truncated to 4096 nucleotides.
-- [rnacentral-8192](https://huggingface.co/datasets/multimolecule/rnacentral-8192): RNAcentral dataset with all sequences truncated to 8192 nucleotides.
+- [rnacentral.512](https://huggingface.co/datasets/multimolecule/rnacentral.512): RNAcentral dataset with all sequences truncated to 512 nucleotides.
+- [rnacentral.1024](https://huggingface.co/datasets/multimolecule/rnacentral.1024): RNAcentral dataset with all sequences truncated to 1024 nucleotides.
+- [rnacentral.2048](https://huggingface.co/datasets/multimolecule/rnacentral.2048): RNAcentral dataset with all sequences truncated to 2048 nucleotides.
+- [rnacentral.4096](https://huggingface.co/datasets/multimolecule/rnacentral.4096): RNAcentral dataset with all sequences truncated to 4096 nucleotides.
+- [rnacentral.8192](https://huggingface.co/datasets/multimolecule/rnacentral.8192): RNAcentral dataset with all sequences truncated to 8192 nucleotides.
 
 ## Derived Datasets
 
diff --git a/multimolecule/datasets/rnacentral/rnacentral.py b/multimolecule/datasets/rnacentral/rnacentral.py
index 958e622a..6943dfdb 100644
--- a/multimolecule/datasets/rnacentral/rnacentral.py
+++ b/multimolecule/datasets/rnacentral/rnacentral.py
@@ -49,7 +49,7 @@ class ConvertConfig(ConvertConfig_):
 
     def post(self):
         if self.max_seq_len is not None:
-            self.output_path = f"{self.output_path}-{self.max_seq_len}"
+            self.output_path = f"{self.output_path}.{self.max_seq_len}"
         super().post()