diff --git a/qutebrowser/app.py b/qutebrowser/app.py
index da0a4ef6d..927d43b29 100644
--- a/qutebrowser/app.py
+++ b/qutebrowser/app.py
@@ -29,6 +29,7 @@ import time
 import shutil
 import tempfile
 import atexit
+import datetime
 
 from PyQt5.QtWidgets import QApplication
 from PyQt5.QtGui import QDesktopServices, QPixmap, QIcon, QCursor, QWindow
@@ -712,6 +713,8 @@ class Application(QApplication):
         objreg.register('args', args)
         objreg.register('app', self)
 
+        self.launch_time = datetime.datetime.now()
+
     def __repr__(self):
         return utils.get_repr(self)
 
diff --git a/qutebrowser/misc/crashdialog.py b/qutebrowser/misc/crashdialog.py
index 64cccde83..05cca5b85 100644
--- a/qutebrowser/misc/crashdialog.py
+++ b/qutebrowser/misc/crashdialog.py
@@ -29,7 +29,7 @@ import pkg_resources
 from PyQt5.QtCore import pyqtSlot, Qt, QSize, qVersion
 from PyQt5.QtWidgets import (QDialog, QLabel, QTextEdit, QPushButton,
                              QVBoxLayout, QHBoxLayout, QCheckBox,
-                             QDialogButtonBox, QMessageBox)
+                             QDialogButtonBox, QMessageBox, QApplication)
 
 import qutebrowser
 from qutebrowser.utils import version, log, utils, objreg, qtutils
@@ -219,6 +219,10 @@ class _CrashDialog(QDialog):
             cmdhist: A list with the command history (as strings)
             exc: An exception tuple (type, value, traceback)
         """
+        try:
+            self._crash_info.append(('Launch time', QApplication.instance().launch_time.strftime("%d-%m-%Y %H:%M:%S")))
+        except Exception:
+            self._crash_info.append(("Launch time", traceback.format_exc()))
         try:
             self._crash_info.append(("Version info", version.version()))
         except Exception: