diff --git a/adminSiteClient/DatasetEditPage.tsx b/adminSiteClient/DatasetEditPage.tsx
index 43679014931..5e3362b3400 100644
--- a/adminSiteClient/DatasetEditPage.tsx
+++ b/adminSiteClient/DatasetEditPage.tsx
@@ -43,7 +43,6 @@ interface DatasetPageData {
     tags: { id: number; name: string }[]
     variables: VariableListItem[]
     charts: ChartListItem[]
-    source?: OwidSource
     variableSources: OwidSource[]
     zipFile?: { filename: string }
 
diff --git a/adminSiteServer/apiRouter.ts b/adminSiteServer/apiRouter.ts
index 8795a33739a..144ca19b484 100644
--- a/adminSiteServer/apiRouter.ts
+++ b/adminSiteServer/apiRouter.ts
@@ -1879,8 +1879,6 @@ apiRouter.get("/datasets/:datasetId.json", async (req: Request) => {
 
     dataset.origins = origins
 
-    // This is only for backwards compatibility where we showed only the first source per
-    // dataset. We now show all of them, so perhaps this part could be removed.
     const sources = await db.queryMysql(
         `
         SELECT s.id, s.name, s.description
@@ -1891,12 +1889,6 @@ apiRouter.get("/datasets/:datasetId.json", async (req: Request) => {
         [datasetId]
     )
 
-    if (sources.length > 0) {
-        dataset.source = JSON.parse(sources[0].description)
-        dataset.source.id = sources[0].id
-        dataset.source.name = sources[0].name
-    }
-
     // expand description of sources and add to dataset as variableSources
     dataset.variableSources = sources.map((s: any) => {
         return {