diff --git a/tests/integration/test_execute.py b/tests/integration/test_execute.py
index df2171ec0..6680eb28f 100644
--- a/tests/integration/test_execute.py
+++ b/tests/integration/test_execute.py
@@ -87,6 +87,35 @@ def test_log_outputs_skips_error_output_in_exception_for_process_with_none_stdou
     assert not error.value.output
 
 
+def test_log_outputs_kills_other_processes_when_one_errors():
+    flexmock(module.logger).should_receive('log')
+    flexmock(module).should_receive('exit_code_indicates_error').and_return(True)
+    flexmock(module).should_receive('command_for_process').and_return('grep')
+
+    process = subprocess.Popen(['grep'], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+    other_process = subprocess.Popen(
+        ['watch', 'true'], stdout=subprocess.PIPE, stderr=subprocess.STDOUT
+    )
+    flexmock(module).should_receive('output_buffer_for_process').with_args(process, ()).and_return(
+        process.stdout
+    )
+    flexmock(module).should_receive('output_buffer_for_process').with_args(
+        other_process, ()
+    ).and_return(other_process.stdout)
+    flexmock(other_process).should_receive('kill').once()
+
+    with pytest.raises(subprocess.CalledProcessError) as error:
+        module.log_outputs(
+            (process, other_process),
+            exclude_stdouts=(),
+            output_log_level=logging.INFO,
+            borg_local_path='borg',
+        )
+
+    assert error.value.returncode == 2
+    assert error.value.output
+
+
 def test_log_outputs_truncates_long_error_output():
     flexmock(module).ERROR_OUTPUT_MAX_LINE_COUNT = 0
     flexmock(module.logger).should_receive('log')
diff --git a/tests/unit/test_execute.py b/tests/unit/test_execute.py
index 7c805d878..97e197ada 100644
--- a/tests/unit/test_execute.py
+++ b/tests/unit/test_execute.py
@@ -21,6 +21,7 @@ from borgmatic import execute as module
         (flexmock(args=['grep']), 0, 'borg', False),
         (flexmock(args=['borg']), 0, 'borg', False),
         (flexmock(args=['borg1']), 0, 'borg1', False),
+        (flexmock(args=['borg']), None, None, False),
     ),
 )
 def test_exit_code_indicates_error_respects_exit_code_and_borg_local_path(