diff --git a/glances/outputs/glances_bars.py b/glances/outputs/glances_bars.py
index f6535368..6f8e7d21 100644
--- a/glances/outputs/glances_bars.py
+++ b/glances/outputs/glances_bars.py
@@ -45,6 +45,9 @@ class Bar(object):
         self.__size = size
         # Bar current percent
         self.__percent = 0
+        # Min and max value
+        self.min_value = 0
+        self.max_value = 100
         # Char used for the decoration
         self.__pre_char = pre_char
         self.__post_char = post_char
@@ -69,9 +72,10 @@ class Bar(object):
 
     @percent.setter
     def percent(self, value):
-        if value < 0 or value > 100:
-            raise AssertionError('The percent must be between 0 and 100.')
-
+        if value <= self.min_value:
+            value = self.min_value
+        if value >= self.max_value:
+            value = self.max_value
         self.__percent = value
 
     @property
diff --git a/unitest.py b/unitest.py
index e4fdc985..94efddf3 100755
--- a/unitest.py
+++ b/unitest.py
@@ -179,17 +179,25 @@ class TestGlances(unittest.TestCase):
         # self.assertEqual(total, len(stats_grab))
 
     def test_011_output_bars_must_be_between_0_and_100_percent(self):
-        """Test quick look plugin."""
+        """Test quick look plugin.
+
+        > bar.min_value
+        0
+        > bar.max_value
+        100
+        > bar.percent = -1
+        > bar.percent
+        0
+        > bar.percent = 101
+        > bar.percent
+        100
+        """
         print('INFO: [TEST_011] Test progress bar')
         bar = Bar(size=1)
-        with self.assertRaises(AssertionError):
-            bar.percent = -1
-            bar.percent = 101
-
-        # 0 - 100 is an inclusive range, so these should not error.
-        bar.percent = 0
-        bar.percent = 100
-
+        bar.percent = -1
+        self.assertLessEqual(bar.percent, bar.min_value)
+        bar.percent = 101
+        self.assertGreaterEqual(bar.percent, bar.max_value)
 
 if __name__ == '__main__':
     unittest.main()