diff --git a/ds/dataset.go b/ds/dataset.go
index 64b9976..fed1802 100644
--- a/ds/dataset.go
+++ b/ds/dataset.go
@@ -248,9 +248,9 @@ func (d *Dataset) GetBody(thread *starlark.Thread, _ *starlark.Builtin, args sta
 	if err != nil {
 		return starlark.None, err
 	}
-	provider.SetBodyFile(qfs.NewMemfileBytes("data.json", data))
+	provider.SetBodyFile(qfs.NewMemfileBytes("body.json", data))
 
-	rr, err := dsio.NewEntryReader(provider.Structure, qfs.NewMemfileBytes("data.json", data))
+	rr, err := dsio.NewEntryReader(provider.Structure, qfs.NewMemfileBytes("body.json", data))
 	if err != nil {
 		return starlark.None, fmt.Errorf("error allocating data reader: %s", err)
 	}
@@ -310,7 +310,7 @@ func (d *Dataset) SetBody(thread *starlark.Thread, _ *starlark.Builtin, args sta
 			return starlark.None, fmt.Errorf("expected data for '%s' format to be a string", df)
 		}
 
-		d.write.SetBodyFile(qfs.NewMemfileBytes(fmt.Sprintf("data.%s", df), []byte(string(str))))
+		d.write.SetBodyFile(qfs.NewMemfileBytes(fmt.Sprintf("body.%s", df), []byte(string(str))))
 		d.modBody = true
 		d.bodyCache = nil
 		return starlark.None, nil
diff --git a/ds/dataset_test.go b/ds/dataset_test.go
index de1a89e..5be0ecf 100644
--- a/ds/dataset_test.go
+++ b/ds/dataset_test.go
@@ -228,7 +228,7 @@ bat,3,meh
 			},
 		},
 	}
-	ds.SetBodyFile(qfs.NewMemfileBytes("data.csv", []byte(text)))
+	ds.SetBodyFile(qfs.NewMemfileBytes("body.csv", []byte(text)))
 
 	d := NewDataset(ds, nil)
 	d.SetMutable(&dataset.Dataset{
diff --git a/ds/testdata/test.star b/ds/testdata/test.star
index a1e3d7a..3ff66b0 100644
--- a/ds/testdata/test.star
+++ b/ds/testdata/test.star
@@ -38,11 +38,11 @@ assert.eq(ds.set_body("[[1,2,3]]", parse_as="json"), None)
 assert.eq(ds.get_body(), bd)
 
 # csv_ds is a global variable provided by dataset_test.go
-# "cycling" csv data through starlark shouldn't have significant effects on the 
+# round-tripping csv data through starlark shouldn't have significant effects on the 
 # encoded data. whitespace is *not* significant.
 # csv data is one of the harder formats, where there header row must be preserved
 csv_ds.set_body(csv_ds.get_body())
 
 expect_data = [["foo",1,"true"], ["bar",2,"false"], ["bat",3,"meh"]]
 assert.eq(expect_data, csv_ds.get_body())
-assert.eq(csv_ds.get_structure()['format'], 'csv')
\ No newline at end of file
+assert.eq(csv_ds.get_structure()['format'], 'csv')