diff --git a/cascade/data/concatenator.py b/cascade/data/concatenator.py
index 9c4c420e..a06b81c0 100644
--- a/cascade/data/concatenator.py
+++ b/cascade/data/concatenator.py
@@ -75,7 +75,5 @@ def get_meta(self) -> List[Dict]:
         Concatenator calls `get_meta()` of all its datasets
         """
         meta = super().get_meta()
-        meta[0]['data'] = {}
-        for ds in self._datasets:
-            meta[0]['data'][repr(ds)] = ds.get_meta()
+        meta[0]['data'] = [ds.get_meta() for ds in self._datasets]
         return meta
diff --git a/cascade/tests/test_concatenator.py b/cascade/tests/test_concatenator.py
index 3359d9a8..dc4f56ef 100644
--- a/cascade/tests/test_concatenator.py
+++ b/cascade/tests/test_concatenator.py
@@ -31,6 +31,7 @@ def test_meta():
 
     c = Concatenator([n1, n2], meta_prefix={'num': 1})
     assert c.get_meta()[0]['num'] == 1
+    assert len(c.get_meta()[0]['data']) == 2
 
 
 @pytest.mark.parametrize(