diff --git a/process/tests/test_process.py b/process/tests/test_process.py
index 5e1f1470fa39b..e68f296fff5ad 100644
--- a/process/tests/test_process.py
+++ b/process/tests/test_process.py
@@ -57,15 +57,16 @@ def __exit__(self, type, value, traceback):
 
 
 class NamedMockProcess(object):
-    def __init__(self, name):
-        self.pid = None
+    def __init__(self, name, pid=None, cmdline=None):
+        self.pid = pid
         self._name = name
+        self._cmdline = cmdline or []
 
     def name(self):
         return self._name
 
     def cmdline(self):
-        return []
+        return self._cmdline
 
 
 def get_psutil_proc():
@@ -237,6 +238,25 @@ def test_check_missing_process(aggregator, dd_run_check, caplog):
     assert "Unable to find process named ['fooprocess', '/usr/bin/foo'] among processes" in caplog.text
 
 
+def test_check_missing_process_with_spaces(aggregator, dd_run_check, caplog):
+    caplog.set_level(logging.DEBUG)
+    instance = {'name': 'foo', 'search_string': ['foo bar process', '/usr/bin/foo test'], 'exact_match': False}
+    process = ProcessCheck(common.CHECK_NAME, {}, [instance])
+    dd_run_check(process)
+    aggregator.assert_service_check('process.up', count=1, status=process.CRITICAL)
+    assert "Unable to find process named ['foo bar process', '/usr/bin/foo test'] among processes" in caplog.text
+
+
+@patch('psutil.process_iter', return_value=[NamedMockProcess("foo", pid=123, cmdline=["foo", "bar", "--baz"])])
+def test_search_string_with_spaces(mock_process_iter, aggregator, dd_run_check):
+    instance = {'name': 'foo', 'search_string': ['foo bar --baz'], 'exact_match': False}
+    process = ProcessCheck(common.CHECK_NAME, {}, [instance])
+    dd_run_check(process)
+    expected_tags = generate_expected_tags(instance)
+    aggregator.assert_metric('system.processes.number', value=1, tags=expected_tags)
+    aggregator.assert_service_check('process.up', count=1, tags=expected_tags + ['process:foo'])
+
+
 @pytest.mark.parametrize("oneshot", [True, False])
 def test_check_real_process(aggregator, dd_run_check, oneshot):
     "Check that we detect python running (at least this process)"