diff --git a/README.txt b/README.txt
index 208271b93..53efafdc6 100644
--- a/README.txt
+++ b/README.txt
@@ -1,7 +1,7 @@
             English README file for OpenSlides
             ==================================
 
-This is OpenSlides, version 1.2.
+This is OpenSlides, version 1.2-beta1.
 
 
 What is OpenSlides?
diff --git a/openslides/__init__.py b/openslides/__init__.py
index ff470788e..6f239889f 100644
--- a/openslides/__init__.py
+++ b/openslides/__init__.py
@@ -5,7 +5,7 @@
     :license: GNU GPL, see LICENSE for more details.
 """
 
-VERSION = (1, 2, 0, 'alpha', 0)
+VERSION = (1, 2, 0, 'beta', 1)
 
 def get_version(version=None):
     """Derives a PEP386-compliant version number from VERSION."""
@@ -31,8 +31,7 @@ def get_version(version=None):
             sub = '.dev'
 
     elif version[3] != 'final':
-        mapping = {'alpha': 'a', 'beta': 'b', 'rc': 'c'}
-        sub = mapping[version[3]] + str(version[4])
+        sub = "-" + version[3] + str(version[4])
 
     return main + sub