diff --git a/python/ql/test/experimental/dataflow/model-summaries/TestSummaries.qll b/python/ql/test/experimental/dataflow/model-summaries/TestSummaries.qll
index 5f1e0a1f90b9..db0375311adc 100644
--- a/python/ql/test/experimental/dataflow/model-summaries/TestSummaries.qll
+++ b/python/ql/test/experimental/dataflow/model-summaries/TestSummaries.qll
@@ -11,14 +11,10 @@ private class StepsFromModel extends ModelInput::SummaryModelCsv {
         "foo;Member[MS_apply_lambda];Argument[1];Argument[0].Parameter[0];value",
         "foo;Member[MS_apply_lambda];Argument[0].ReturnValue;ReturnValue;value",
         "foo;Member[MS_reversed];Argument[0].ListElement;ReturnValue.ListElement;value",
-        "foo;Member[MS_reversed];Argument[0];ReturnValue;taint",
         "foo;Member[MS_list_map];Argument[1].ListElement;Argument[0].Parameter[0];value",
         "foo;Member[MS_list_map];Argument[0].ReturnValue;ReturnValue.ListElement;value",
-        "foo;Member[MS_list_map];Argument[1];ReturnValue;taint",
         "foo;Member[MS_append_to_list];Argument[0].ListElement;ReturnValue.ListElement;value",
         "foo;Member[MS_append_to_list];Argument[1];ReturnValue.ListElement;value",
-        "foo;Member[MS_append_to_list];Argument[0];ReturnValue;taint",
-        "foo;Member[MS_append_to_list];Argument[1];ReturnValue;taint",
         "json;Member[MS_loads];Argument[0];ReturnValue;taint"
       ]
   }
diff --git a/python/ql/test/experimental/dataflow/model-summaries/model_summaries.py b/python/ql/test/experimental/dataflow/model-summaries/model_summaries.py
index ee02918b0798..6f9c6be31b58 100644
--- a/python/ql/test/experimental/dataflow/model-summaries/model_summaries.py
+++ b/python/ql/test/experimental/dataflow/model-summaries/model_summaries.py
@@ -49,11 +49,6 @@ def SINK_F(x):
 via_reversed = MS_reversed([SOURCE])
 SINK(via_reversed[0])  # $ flow="SOURCE, l:-1 -> via_reversed[0]"
 
-tainted_list = MS_reversed(TAINTED_LIST)
-ensure_tainted(
-    tainted_list,  # $ tainted
-    tainted_list[0],  # $ tainted
-)
 
 # Complex summaries
 def box(x):
@@ -62,11 +57,6 @@ def box(x):
 via_map = MS_list_map(box, [SOURCE])
 SINK(via_map[0][0])  # $ flow="SOURCE, l:-1 -> via_map[0][0]"
 
-tainted_mapped = MS_list_map(box, TAINTED_LIST)
-ensure_tainted(
-    tainted_mapped,  # $ tainted
-    tainted_mapped[0][0],  # $ tainted
-)
 
 def explicit_identity(x):
     return x
@@ -74,38 +64,18 @@ def explicit_identity(x):
 via_map_explicit = MS_list_map(explicit_identity, [SOURCE])
 SINK(via_map_explicit[0])  # $ flow="SOURCE, l:-1 -> via_map_explicit[0]"
 
-tainted_mapped_explicit = MS_list_map(explicit_identity, TAINTED_LIST)
-ensure_tainted(
-    tainted_mapped_explicit,  # $ tainted
-    tainted_mapped_explicit[0],  # $ tainted
-)
 
 via_map_summary = MS_list_map(MS_identity, [SOURCE])
 SINK(via_map_summary[0])  # $ flow="SOURCE, l:-1 -> via_map_summary[0]"
 
-tainted_mapped_summary = MS_list_map(MS_identity, TAINTED_LIST)
-ensure_tainted(
-    tainted_mapped_summary,  # $ tainted
-    tainted_mapped_summary[0],  # $ tainted
-)
 
 via_append_el = MS_append_to_list([], SOURCE)
 SINK(via_append_el[0])  # $ flow="SOURCE, l:-1 -> via_append_el[0]"
 
-tainted_list_el = MS_append_to_list([], TAINTED_STRING)
-ensure_tainted(
-    tainted_list_el,  # $ tainted
-    tainted_list_el[0],  # $ tainted
-)
 
 via_append = MS_append_to_list([SOURCE], NONSOURCE)
 SINK(via_append[0])  # $ flow="SOURCE, l:-1 -> via_append[0]"
 
-tainted_list_implicit = MS_append_to_list(TAINTED_LIST, NONSOURCE)
-ensure_tainted(
-    tainted_list,  # $ tainted
-    tainted_list[0],  # $ tainted
-)
 
 # Modeled flow-summary is not value preserving
 from json import MS_loads as json_loads