diff --git a/algorithms.py b/algorithms.py
index e08ef337f..b2d90bdb3 100644
--- a/algorithms.py
+++ b/algorithms.py
@@ -708,7 +708,7 @@ def assert_stop_condition(self):
         elif self.stop_condition == "all_local_mrcas":
             return any(num_anc > 1 for num_anc in self.S.values())
         elif self.stop_condition == "time":
-            return self.get_num_ancestors() > 1
+            return True
         elif self.stop_condition == "pedigree":
             return True
         else:
@@ -1143,7 +1143,7 @@ def dtwf_simulate(self, end_time):
         Simulates the algorithm until all loci have coalesced.
         """
         ret = 0
-        while self.ancestors_remain():
+        while self.assert_stop_condition():
             if self.t + 1 > end_time:
                 ret = 2  # _msprime.EXIT_MAX_TIME
                 break
@@ -2307,7 +2307,7 @@ def run_simulate(args):
     else:
         from_ts = tskit.load(args.from_ts)
         tables = from_ts.dump_tables()
-    if args.stop_condition == "full_pedigree":
+    if args.stop_condition == "pedigree":
         end_time = np.max(from_ts.nodes_time)
     else:
         end_time = args.end_time
diff --git a/tests/test_algorithms.py b/tests/test_algorithms.py
index 624c583b9..d62e1d16f 100644
--- a/tests/test_algorithms.py
+++ b/tests/test_algorithms.py
@@ -469,7 +469,15 @@ def test_stopping_condition_pedigree(self):
             tables.dump(ts_path)
             ts = self.run_script(
                 f"0 --from-ts {ts_path} --model=fixed_pedigree -r 0.1 \
-                --stop-condition=full_pedigree"
+                --stop-condition=pedigree"
             )
         assert ts.num_trees > 1
         assert ts.max_root_time == num_generations - 1
+
+    def test_stopping_condition_dtwf(self):
+        end_time = 20
+        ts = self.run_script(
+            f"10 --model=dtwf --stop-condition=time --end-time={end_time}"
+        )
+        assert ts.num_trees > 1
+        assert ts.max_root_time == end_time