diff --git a/src/test_pamhyr.py b/src/test_pamhyr.py
index 29ddd83c098d1a76cf46f0e20848dc0a59863368..d8d5cf9af6b651c4ee1e1ef9ed5129b85f4f2d61 100644
--- a/src/test_pamhyr.py
+++ b/src/test_pamhyr.py
@@ -78,6 +78,16 @@ class ToolsCMDParserTestCase(unittest.TestCase):
         for i, s in enumerate(expect):
             self.assertEqual(res[i], s)
 
+    def test_unix_escape_space(self):
+        cmd = "/foo/bar\ baz -a -b -c"
+        expect = ["/foo/bar\ baz", "-a", '-b', "-c"]
+
+        res = parse_command_line(cmd)
+
+        for i, s in enumerate(expect):
+            self.assertEqual(res[i], s)
+
+
     def test_windows_prog_files(self):
         cmd = "\"C:\\Program Files (x86)\foo\bar\" a -b -c"
         expect = ["C:\\Program Files (x86)\foo\bar", "a", '-b', "-c"]