diff --git a/pym/calculate/lib/utils/portage.py b/pym/calculate/lib/utils/portage.py
index ed94162..e2a0c9f 100644
--- a/pym/calculate/lib/utils/portage.py
+++ b/pym/calculate/lib/utils/portage.py
@@ -1289,7 +1289,6 @@ class SimpleRepositoryMapper(Mapping):
 class EbuildInfoError(Exception):
     pass
 
-
 class EbuildInfo(object):
     """
     Информация о ebuild (DEPEND) из metadata
@@ -1303,7 +1302,12 @@ class EbuildInfo(object):
         self._meta_info_path = path.join(meta_path, atom)
         if not path.exists(self._meta_info_path):
             raise EbuildInfoError("Package is not found")
-        self._info = self._get_info()
+        self._info = self.prepare_use_flags(self._get_info())
+
+    @staticmethod
+    def prepare_use_flags(d):
+        d["IUSE"] = tuple(sorted(x for x in d.get("IUSE","").split(' ') if x ))
+        return d
 
     def _get_info(self):
         with open(self._meta_info_path, 'r') as f:
@@ -1325,7 +1329,7 @@ class EbuildInfo(object):
         # if res:
         #    for k in self.support_keys:
         #        if other[k] != self[k]:
-        #            print k,":", other[k], "!=", self[k]
+        #            print "DEBUG:", k,":", other[k], "!=", self[k]
         return res
 
 
@@ -1360,7 +1364,7 @@ class InstalledPackageInfo(object):
                     info[key] = value.strip()
         rep_path = path.join(self._pkg_path, 'repository')
         info['repository'] = readFile(rep_path).strip()
-        return info
+        return EbuildInfo.prepare_use_flags(info)
 
     def __getitem__(self, item):
         return self._info[item]