diff --git a/website/src/components/Submission/DataUploadForm.tsx b/website/src/components/Submission/DataUploadForm.tsx
index ca87d99d7..a172162c6 100644
--- a/website/src/components/Submission/DataUploadForm.tsx
+++ b/website/src/components/Submission/DataUploadForm.tsx
@@ -129,7 +129,7 @@ const InnerDataUploadForm = ({
     metadataTemplateFields,
 }: DataUploadFormProps) => {
     const [metadataFile, setMetadataFile] = useState<ProcessedFile | null>(null);
-    // can be null; if null -> don't apply mapping.
+    // The columnMapping can be null; if null -> don't apply mapping.
     const [columnMapping, setColumnMapping] = useState<ColumnMapping | null>(null);
     const [sequenceFile, setSequenceFile] = useState<ProcessedFile | null>(null);
     const [exampleEntries, setExampleEntries] = useState<number | undefined>(10);