diff --git a/superset/thumbnails/digest.py b/superset/thumbnails/digest.py
index db4a0249f0f..d02605b8c5c 100644
--- a/superset/thumbnails/digest.py
+++ b/superset/thumbnails/digest.py
@@ -128,6 +128,6 @@ def get_chart_digest(chart: Slice) -> str | None:
 
     unique_string = f"{chart.params or ''}.{executor}"
     unique_string = _adjust_string_for_executor(unique_string, executor_type, executor)
-    unique_string = _adjust_string_with_rls(unique_string, [chart.datasource], executor)
+    unique_string = _adjust_string_with_rls(unique_string, [chart.table], executor)
 
     return hash_from_str(unique_string)
diff --git a/tests/unit_tests/thumbnails/test_digest.py b/tests/unit_tests/thumbnails/test_digest.py
index d1a787c069e..4fe1d767769 100644
--- a/tests/unit_tests/thumbnails/test_digest.py
+++ b/tests/unit_tests/thumbnails/test_digest.py
@@ -407,6 +407,7 @@ def test_chart_digest(
         **(chart_overrides or {}),
     }
     chart = Slice(**kwargs)
+    chart.table = datasource
 
     user: User | None = None
     if has_current_user:
@@ -422,12 +423,6 @@ def test_chart_digest(
                 "THUMBNAIL_CHART_DIGEST_FUNC": func,
             },
         ),
-        patch.object(
-            type(chart),
-            "datasource",
-            new_callable=PropertyMock,
-            return_value=datasource,
-        ),
         patch.object(security_manager, "find_user", return_value=user),
         override_user(user),
     ):