diff --git a/src/IDF/Scm/Git.php b/src/IDF/Scm/Git.php
index 8dc1bbd..3ae4944 100644
--- a/src/IDF/Scm/Git.php
+++ b/src/IDF/Scm/Git.php
@@ -46,7 +46,7 @@ class IDF_Scm_Git extends IDF_Scm
         if (!file_exists($this->repo)) {
             return 0;
         }
-        $cmd = Pluf::f('idf_exec_cmd_prefix', '').'du -skD '
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').'du -sk '
             .escapeshellarg($this->repo);
         $out = explode(' ', 
                        self::shell_exec('IDF_Scm_Git::getRepositorySize', $cmd),
diff --git a/src/IDF/Scm/Mercurial.php b/src/IDF/Scm/Mercurial.php
index 7ad6eda..f0ef715 100644
--- a/src/IDF/Scm/Mercurial.php
+++ b/src/IDF/Scm/Mercurial.php
@@ -35,7 +35,7 @@ class IDF_Scm_Mercurial extends IDF_Scm
 
     public function getRepositorySize()
     {
-        $cmd = Pluf::f('idf_exec_cmd_prefix', '').'du -skD '
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').'du -sk '
             .escapeshellarg($this->repo);
         $out = explode(' ', 
                        self::shell_exec('IDF_Scm_Mercurial::getRepositorySize',
diff --git a/src/IDF/Scm/Svn.php b/src/IDF/Scm/Svn.php
index 8ee621d..fbdcb4b 100644
--- a/src/IDF/Scm/Svn.php
+++ b/src/IDF/Scm/Svn.php
@@ -56,7 +56,7 @@ class IDF_Scm_Svn extends IDF_Scm
         if (strpos($this->repo, 'file://') !== 0) {
             return -1;
         }
-        $cmd = Pluf::f('idf_exec_cmd_prefix', '').'du -skD '
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').'du -sk '
             .escapeshellarg(substr($this->repo, 7));
         $out = explode(' ', self::shell_exec('IDF_Scm_Svn::getRepositorySize', $cmd), 2);
         return (int) $out[0]*1024;