diff --git a/osbuild/monitor.py b/osbuild/monitor.py
index 0393aab1..267c093f 100644
--- a/osbuild/monitor.py
+++ b/osbuild/monitor.py
@@ -258,11 +258,12 @@ class LogMonitor(BaseMonitor):
 
     def __init__(self, fd: int, total_steps: int = 0):
         super().__init__(fd, total_steps)
-        self.timer_start = 0
+        self._module_start_time: Optional[float] = None
 
     def result(self, result: Union[BuildResult, DownloadResult]) -> None:
-        duration = int(time.time() - self.timer_start)
-        self.out.write(f"\n⏱  Duration: {duration}s\n")
+        if self._module_start_time is not None:
+            duration = time.monotonic() - self._module_start_time
+            self.out.write(f"\n⏱  Duration: {duration:.2f}s\n")
 
     def begin(self, pipeline):
         self.out.term(vt.bold, clear=True)
@@ -304,7 +305,7 @@ class LogMonitor(BaseMonitor):
         json.dump(options, self.out, indent=2)
         self.out.write("\n")
 
-        self.timer_start = time.time()
+        self._module_start_time = time.monotonic()
 
     def log(self, message, origin: Optional[str] = None):
         self.out.write(message)
diff --git a/test/mod/test_monitor.py b/test/mod/test_monitor.py
index 1eef7553..73d810fc 100644
--- a/test/mod/test_monitor.py
+++ b/test/mod/test_monitor.py
@@ -57,6 +57,31 @@ class TapeMonitor(osbuild.monitor.BaseMonitor):
 
 
 class TestMonitor(unittest.TestCase):
+    @unittest.skipUnless(test.TestBase.can_bind_mount(), "root-only")
+    def test_log_monitor_no_duration(self):
+        index = osbuild.meta.Index(os.curdir)
+
+        runner = Runner(index.detect_host_runner())
+        pipeline = osbuild.Pipeline("pipeline", runner=runner)
+
+        with tempfile.TemporaryDirectory() as tmpdir:
+            storedir = os.path.join(tmpdir, "store")
+
+            logfile = os.path.join(tmpdir, "log.txt")
+
+            with open(logfile, "w", encoding="utf8") as log, ObjectStore(storedir) as store:
+                monitor = LogMonitor(log.fileno())
+                res = pipeline.run(store,
+                                   monitor,
+                                   libdir=os.path.abspath(os.curdir))
+                monitor.result(res)
+
+                with open(logfile, encoding="utf8") as f:
+                    log = f.read()
+
+            assert res
+            self.assertNotIn("Duration", log)
+
     @unittest.skipUnless(test.TestBase.can_bind_mount(), "root-only")
     def test_log_monitor_vfuncs(self):
         # Checks the basic functioning of the LogMonitor
@@ -86,6 +111,7 @@ class TestMonitor(unittest.TestCase):
             assert res
             self.assertIn(pipeline.stages[0].id, log)
             self.assertIn("isthisthereallife", log)
+            self.assertIn("Duration", log)
 
     @unittest.skipUnless(test.TestBase.can_bind_mount(), "root-only")
     def test_monitor_integration(self):