diff --git a/groups.py b/groups.py
index f412f60fc..162285179 100644
--- a/groups.py
+++ b/groups.py
@@ -1060,8 +1060,9 @@ def group_create(ctx, group_name, category, subcategory, schema_id, expiration_d
                 return api.Error('sram_error', message)
             else:
                 co_identifier = response_sram['identifier']
+                short_name = response_sram['short_name']
 
-            if not sram.sram_connect_service_collaboration(ctx, group_name):
+            if not sram.sram_connect_service_collaboration(ctx, short_name):
                 return api.Error('sram_error', 'Something went wrong connecting service to group "{}" in SRAM'.format(group_name))
 
         response = ctx.uuGroupAdd(group_name, category, subcategory, schema_id, expiration_date, description, data_classification, co_identifier, '', '')['arguments']
@@ -1337,9 +1338,10 @@ def rule_group_sram_sync(ctx):
                 break
             else:
                 co_identifier = response_sram['identifier']
+                short_name = response_sram['short_name']
                 avu.associate_to_group(ctx, group_name, "co_identifier", co_identifier)
 
-            if not sram.sram_connect_service_collaboration(ctx, group_name):
+            if not sram.sram_connect_service_collaboration(ctx, short_name):
                 log.write(ctx, "Something went wrong connecting service to group {} in SRAM".format(group_name))
                 break
 
diff --git a/requirements.txt b/requirements.txt
index 2b395255d..adf159c74 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,6 +20,5 @@ pysqlcipher3==1.0.4
 execnet==1.9.0
 deepdiff==3.3.0
 persist-queue==0.8.1
-pyblake2==1.1.2
 redis==3.5.3
 psutil==5.9.6
diff --git a/sram.py b/sram.py
index cf08fe484..bbf4813de 100644
--- a/sram.py
+++ b/sram.py
@@ -36,9 +36,6 @@ def sram_post_collaboration(ctx, group_name, description, expiration_date):
     epoch = datetime.datetime.utcfromtimestamp(0)
     epoch_date = int((date - epoch).total_seconds())
 
-    # Create unique short name of group
-    short_name = group.unique_short_name(ctx, group_name)
-
     disable_join_requests = True
     if config.sram_flow == 'join_request':
         disable_join_requests = False
@@ -46,7 +43,6 @@ def sram_post_collaboration(ctx, group_name, description, expiration_date):
     # Build SRAM payload.
     payload = {
         "name": 'yoda-' + group_name,
-        "short_name": short_name,
         "description": description,
         "disable_join_requests": disable_join_requests,
         "disclose_member_information": True,
@@ -190,20 +186,17 @@ def sram_put_collaboration_invitation(ctx, group_name, username, co_identifier):
     return response.status_code == 201
 
 
-def sram_connect_service_collaboration(ctx, group_name):
+def sram_connect_service_collaboration(ctx, short_name):
     """Connect a service to an existing SRAM collaboration.
 
     :param ctx:        Combined type of a ctx and rei struct
-    :param group_name: Name of the group
+    :param short_name: Short name of the group collaboration
 
     :returns: Boolean indicating if connecting a service to an existing collaboration succeeded
     """
     url = "{}/api/collaborations_services/v1/connect_collaboration_service".format(config.sram_rest_api_url)
     headers = {'Content-Type': 'application/json', 'charset': 'UTF-8', 'Authorization': 'bearer ' + config.sram_api_key}
 
-    # Create unique short name of group
-    short_name = group.unique_short_name(ctx, group_name)
-
     # Build SRAM payload.
     payload = {
         "short_name": short_name,
diff --git a/util/group.py b/util/group.py
index d00ebc27c..b56b32067 100644
--- a/util/group.py
+++ b/util/group.py
@@ -1,11 +1,10 @@
 # -*- coding: utf-8 -*-
 """Utility / convenience functions for querying user info."""
 
-__copyright__ = 'Copyright (c) 2019-2021, Utrecht University'
+__copyright__ = 'Copyright (c) 2019-2023, Utrecht University'
 __license__   = 'GPLv3, see LICENSE'
 
 import genquery
-from pyblake2 import blake2b
 
 import user
 
@@ -58,21 +57,3 @@ def get_category(ctx, grp):
     ret = ctx.uuGroupGetCategory(grp, '', '')
     x = ret['arguments'][1]
     return None if x == '' else x
-
-
-def unique_short_name(ctx, group_name):
-    """Create unique short name for group in SRAM.
-
-    :param ctx:        Combined type of a callback and rei struct
-    :param group_name: Group name
-
-    :returns: Blake2b hash of zone and group name prefixed with y
-    """
-    zone = user.zone(ctx)
-    concat_string = zone + group_name
-
-    # Create hash of 16 characters
-    short_name = blake2b(digest_size=7)
-    short_name.update(concat_string.encode())
-
-    return "y_{}".format(short_name.hexdigest())