diff --git a/fuel_agent/tests/test_grub_utils.py b/fuel_agent/tests/test_grub_utils.py
index 725dc00a..eac0be33 100644
--- a/fuel_agent/tests/test_grub_utils.py
+++ b/fuel_agent/tests/test_grub_utils.py
@@ -121,7 +121,8 @@ class TestGrubUtils(test_base.BaseTestCase):
         mock_ggi.return_value = '/grub_install'
         mock_exec.return_value = ('foo 0.97 bar', '')
         version = gu.guess_grub_version('/target')
-        mock_exec.assert_called_once_with('/target/grub_install', '-v')
+        cmd = 'chroot /target /grub_install --version'.split()
+        mock_exec.assert_called_once_with(*cmd)
         self.assertEqual(version, 1)
 
     @mock.patch.object(gu, 'guess_grub_install')
@@ -130,7 +131,8 @@ class TestGrubUtils(test_base.BaseTestCase):
         mock_ggi.return_value = '/grub_install'
         mock_exec.return_value = ('foo bar', '')
         version = gu.guess_grub_version('/target')
-        mock_exec.assert_called_once_with('/target/grub_install', '-v')
+        cmd = 'chroot /target /grub_install --version'.split()
+        mock_exec.assert_called_once_with(*cmd)
         self.assertEqual(version, 2)
 
     @mock.patch.object(os.path, 'isfile')
diff --git a/fuel_agent/utils/grub_utils.py b/fuel_agent/utils/grub_utils.py
index 559ef351..8aefbf39 100644
--- a/fuel_agent/utils/grub_utils.py
+++ b/fuel_agent/utils/grub_utils.py
@@ -45,8 +45,11 @@ def guess_grub2_mkconfig(chroot=''):
 
 def guess_grub_version(chroot=''):
     grub_install = guess_grub_install(chroot=chroot)
-    LOG.debug('Trying to run %s -v' % grub_install)
-    result = utils.execute(chroot + grub_install, '-v')
+    LOG.debug('Trying to run %s --version' % grub_install)
+    cmd = [grub_install, '--version']
+    if chroot:
+        cmd[:0] = ['chroot', chroot]
+    result = utils.execute(*cmd)
     version = 1 if result[0].find('0.97') > 0 else 2
     LOG.debug('Looks like grub version is %s' % version)
     return version