diff --git a/lib/hgaster/ascommands.py b/lib/hgaster/ascommands.py
index 8fb860ff93b4f7a376f9c8eae02816b60178618c..3c1628c9b0a941b08ee4ec0b5f99f287d16bc355 100644
--- a/lib/hgaster/ascommands.py
+++ b/lib/hgaster/ascommands.py
@@ -34,6 +34,7 @@ from .ext_utils import (check_for_updates, get_changed_files, get_description,
                         parent_is_last, sendmail, shortrev, shortrev_s,
                         valid_branch)
 from .request_queue import QueueError, Request, RequestQueue, requestkey
+from .hooks.generic import OK
 
 cmdtable = {}
 command = cmdutil.command(cmdtable)
@@ -582,7 +583,7 @@ class CandidateRevisionCheck(object):
 
     def check_single_head(self):
         """Check for single heads in branch."""
-        from hooks.generic import OK, single_head_per_branch_hook
+        from hooks.generic import single_head_per_branch_hook
         checker = single_head_per_branch_hook()
         return checker(self.ui, self.repo, self.wrkrev) == OK
 
@@ -1083,7 +1084,7 @@ class SubmitAsterXX(AbstractSubmitAster):
 
     def check_branch(self, dummy, branch):
         """Check branch validity."""
-        from hooks.generic import OK, branch_checker
+        from hooks.generic import branch_checker
         return branch_checker('^asterxx/')(branch) == OK
 
     def accept_special_issue(self, issue_id):
@@ -1136,7 +1137,6 @@ class SubmitDevtools(AbstractSubmit):
 
     def check_branch(self, dummy, branch):
         """Check branch validity."""
-        from hooks.generic import OK
         from hooks.devtools import repo_branch_checker
         return repo_branch_checker(branch) == OK
 
@@ -1166,16 +1166,11 @@ class SubmitAsterStudy(AbstractSubmitSmeca):
     command_lint = ["./check_lint.sh", "-p"]
     command_tests = [["./check_salome.sh", "-c"],
                      ["./check_docs.sh"],
-                     ["./check_comm2study.sh", "clean", "--jobs=4"],
-                     ["./check_comm2code.sh", "clean", "--jobs=4"],
-                     ["./check_persistence.sh", "clean", "--jobs=4"],
-                     ["./check_performance.sh", "clean", "--jobs=4"],
                     ]
 
     @staticmethod
     def check_branch(dummy, branch):
         """Check branch validity."""
-        from hooks.generic import OK
         from hooks.asterstudy import repo_branch_checker
         return repo_branch_checker(branch) == OK
 
@@ -1187,7 +1182,6 @@ class SubmitRTool(AbstractSubmitSmeca):
     @staticmethod
     def check_branch(dummy, branch):
         """Check branch validity."""
-        from hooks.generic import OK
         from hooks.rtool import repo_branch_checker
         return repo_branch_checker(branch) == OK