diff --git a/pym/cl_builder.py b/pym/cl_builder.py
index 31299cc..fb00c20 100644
--- a/pym/cl_builder.py
+++ b/pym/cl_builder.py
@@ -33,7 +33,6 @@ from cl_distr import IsoDistributive, DirectoryDistributive, \
                     DistributiveError
 from cl_template import template,iniParser
 from cl_vars_share import varsShare
-from datetime import datetime
 from time import sleep
 
 from cl_kernel_utils import KernelConfig,InitRamFs
@@ -664,10 +663,7 @@ class cl_builder(color_print):
                           'os_assemble_linux_ver')).encode('utf-8')
         if linuxver:
             self.clVars.Set('os_builder_linux_ver',linuxver ,True)
-        else:
-            curdate = datetime.now()
-            linuxver =  "%04d%02d%02d"%(curdate.year,curdate.month,curdate.day)
-            self.clVars.Set('os_builder_linux_build',linuxver ,True)
+            self.clVars.Set('os_builder_linux_build','',True)
         return True
 
     def createPackageList(self,chrootdir,filename):
diff --git a/pym/cl_fill_builder.py b/pym/cl_fill_builder.py
index 34405f2..e9874f2 100644
--- a/pym/cl_fill_builder.py
+++ b/pym/cl_fill_builder.py
@@ -28,6 +28,7 @@ from operator import itemgetter
 from types import ListType
 from cl_datavars import iniParser
 from cl_vars import Data as libData
+from datetime import datetime
 
 class fillVars(object, varsShare):
 
@@ -344,6 +345,11 @@ class fillVars(object, varsShare):
                   'march':self.Get('os_builder_arch_machine')})
         return ""
 
+    def get_os_builder_linux_build(self):
+        """Generate build"""
+        curdate = datetime.now()
+        return "%04d%02d%02d"%(curdate.year,curdate.month,curdate.day)
+
     def get_cl_builder_distro(self):
         """Current assembling systems"""
         envFile = '/etc/calculate/assemble.env'