diff --git a/pym/cl_distr.py b/pym/cl_distr.py
index b3046f9..5c9b091 100644
--- a/pym/cl_distr.py
+++ b/pym/cl_distr.py
@@ -130,7 +130,9 @@ class DistributiveRepository:
             if pathexists(pathjoin(path,'etc/calculate')):
                 return [path]
             else:
-                return os.listdir(path)
+                # discard inner directories
+                return filter(lambda x:not os.path.isdir(pathjoin(path,x)),
+                              os.listdir(path))
         # get lists files in directories
         allFiles = map(lambda x: map(lambda y: pathjoin(x,y),
                                      listdistr(x)),
diff --git a/pym/cl_install.py b/pym/cl_install.py
index 755de94..81b484e 100644
--- a/pym/cl_install.py
+++ b/pym/cl_install.py
@@ -522,9 +522,12 @@ class convertDictOpt:
                 dictUpdateProperty["mountPoint"] = optMountPoint
             supportedFS = self.getAllSupportFileSystemOpt()
             # if fs not specified and current fs not supported
-            if not optFileSystem and \
-                not (format and format in supportedFS):
-                optFileSystem = "default"
+            if not optFileSystem:
+                if not (format and format in supportedFS):
+                    optFileSystem = "default"
+                else:
+                    dictUpdateProperty["fileSystem"] = format
+
             # if specified fs
             if optFileSystem:
                 # if specified wrong fs