diff --git a/syncplay/__init__.py b/syncplay/__init__.py
index 471e505..123b84a 100644
--- a/syncplay/__init__.py
+++ b/syncplay/__init__.py
@@ -1,4 +1,5 @@
 version = '1.5.5'
+revision = ''
 milestone = 'Yoitsu'
 release_number = '64'
 projectURL = 'https://syncplay.pl/'
diff --git a/syncplay/ui/gui.py b/syncplay/ui/gui.py
index 7e5d1ba..4cc46e5 100755
--- a/syncplay/ui/gui.py
+++ b/syncplay/ui/gui.py
@@ -4,7 +4,7 @@ from syncplay.vendor.Qt.QtCore import Qt, QSettings, QSize, QPoint, QUrl, QLine,
 from platform import python_version
 if IsPySide2:
     from PySide2.QtCore import QStandardPaths
-from syncplay import utils, constants, version, release_number
+from syncplay import utils, constants, version, revision, release_number
 from syncplay.messages import getMessage
 from syncplay.utils import resourcespath
 import sys
@@ -116,7 +116,8 @@ class AboutDialog(QtWidgets.QDialog):
          nameLabel.setFont(QtGui.QFont("Helvetica", 18))
          linkLabel = QtWidgets.QLabel("<center><a href=\"https://syncplay.pl\">syncplay.pl</a></center>")
          linkLabel.setOpenExternalLinks(True)
-         versionLabel = QtWidgets.QLabel("<p><center>" + getMessage("about-dialog-release").format(version, release_number) + "<br />Python " + python_version() + " - " + __binding__ + " " + __binding_version__ + " - Qt " + __qt_version__ + "</center></p>")
+         versionExtString = version + revision
+         versionLabel = QtWidgets.QLabel("<p><center>" + getMessage("about-dialog-release").format(versionExtString, release_number) + "<br />Python " + python_version() + " - " + __binding__ + " " + __binding_version__ + " - Qt " + __qt_version__ + "</center></p>")
          licenseLabel = QtWidgets.QLabel("<center><p>Copyright &copy; 2012&ndash;2018 Syncplay</p><p>" + getMessage("about-dialog-license-text") + "</p></center>")
          aboutIconPixmap = QtGui.QPixmap(resourcespath + u"syncplay.png")
          aboutIconLabel = QtWidgets.QLabel()