diff --git a/avocado/plugins/xunit.py b/avocado/plugins/xunit.py
index e1a583073f5aa627bd7304c886000e6fc325df4b..ada40e58613101507e839ec27eac9981cc340c9c 100644
--- a/avocado/plugins/xunit.py
+++ b/avocado/plugins/xunit.py
@@ -71,12 +71,12 @@ class XUnitResult(Result):
                     if log_size < max_log_size:
                         text_output = logfile_obj.read()
                     else:
-                        size = max_log_size / 2
+                        size = int(max_log_size / 2)
                         logfile_obj.seek(0, 0)
                         text_output = logfile_obj.read(size)
                         text_output += ("\n\n--[ CUT DUE TO XML PER TEST "
                                         "LIMIT ]--\n\n")
-                        logfile_obj.seek(-size / 2, 2)
+                        logfile_obj.seek(log_size - size, 0)
                         text_output += logfile_obj.read()
                 else:
                     text_output = logfile_obj.read()
diff --git a/selftests/unit/test_xunit.py b/selftests/unit/test_xunit.py
index 14a578046bfe24bcce9e9e86d00c2b4aafc2c1e8..a2ad17fa172c12556f7446415069a212d065fbf5 100644
--- a/selftests/unit/test_xunit.py
+++ b/selftests/unit/test_xunit.py
@@ -97,6 +97,7 @@ class xUnitSucceedTest(unittest.TestCase):
     def test_max_test_log_size(self):
         log = tempfile.NamedTemporaryFile(dir=self.tmpdir, delete=False)
         log_content = b"1234567890" * 100
+        log_content += b"this should not be present" + b"0987654321" * 100
         log.write(log_content)
         log_path = log.name
         log.close()
@@ -117,6 +118,14 @@ class xUnitSucceedTest(unittest.TestCase):
                         "Length of xunit limitted to 10 chars was greater "
                         "than (unlimited - 500). Unlimited output:\n%s\n\n"
                         "Limited output:\n%s" % (unlimited, limited))
+        self.assertIn(b"this should not be present", unlimited)
+        self.assertNotIn(b"this should not be present", limited)
+        self.assertIn(b"1234567890", unlimited)
+        self.assertNotIn(b"1234567890", limited)
+        self.assertIn(b"12345", limited)
+        self.assertIn(b"0987654321", unlimited)
+        self.assertNotIn(b"0987654321", limited)
+        self.assertIn(b"54321", limited)
 
 
 if __name__ == '__main__':