diff --git a/ooui/graph/indicator.py b/ooui/graph/indicator.py
index 1299284..d307037 100644
--- a/ooui/graph/indicator.py
+++ b/ooui/graph/indicator.py
@@ -24,6 +24,8 @@ def __init__(self, graph_type, element):
         ) or None
         self._show_percent = parse_bool_attribute(
             element.get('showPercent')) if element.get('showPercent') else False
+        self._progressbar = parse_bool_attribute(
+            element.get('progressbar')) if element.get('progressbar') else False
         self.domain_parse_values = {}
 
     @property
@@ -42,6 +44,10 @@ def total_domain(self):
     def show_percent(self):
         return self._show_percent
 
+    @property
+    def progressbar(self):
+        return self._progressbar
+
     @property
     def suffix(self):
         return self._suffix
@@ -61,7 +67,11 @@ def process(self, value, total=0):
             res['color'] = self.color.eval(res)
         if self.icon:
             res['icon'] = self.icon.eval(res)
-        if not self.show_percent:
+        if self.progressbar:
+            res['progressbar'] = self.progressbar
+        if self.show_percent:
+            res['showPercent'] = self.show_percent
+        if not self.show_percent and not self.progressbar:
             res.pop('percent', None)
         return res
 
diff --git a/spec/graph/graph_spec.py b/spec/graph/graph_spec.py
index 96c8e7a..94b76b7 100644
--- a/spec/graph/graph_spec.py
+++ b/spec/graph/graph_spec.py
@@ -33,8 +33,46 @@
         expect(graph.fields).to(contain_only('potencia'))
         expect(graph.total_domain).to(be_none)
         expect(graph.show_percent).to(be_true)
+        expect(graph.progressbar).to(be_false)
         expect(graph.suffix).to(equal('kW'))
 
+    with it('should support progressbar attribute'):
+        xml = """<?xml version="1.0"?>
+        <graph string="My indicator" progressbar="1" type="indicator" />
+        """
+        graph = parse_graph(xml)
+        expect(graph.progressbar).to(be_true)
+        expect(graph.show_percent).to(be_false)
+
+    with it('should calculate percent when progressbar is true'):
+        xml = """<?xml version="1.0"?>
+        <graph string="My indicator" progressbar="1" type="indicator" />
+        """
+        graph = parse_graph(xml)
+        result = graph.process(50, 100)
+        expect(result).to(have_key('percent', 50.0))
+        expect(result).to(have_key('progressbar', True))
+        expect(result).not_to(have_key('showPercent'))
+
+    with it('should calculate percent when showPercent is true'):
+        xml = """<?xml version="1.0"?>
+        <graph string="My indicator" showPercent="1" type="indicator" />
+        """
+        graph = parse_graph(xml)
+        result = graph.process(50, 100)
+        expect(result).to(have_key('percent', 50.0))
+        expect(result).to(have_key('showPercent', True))
+
+    with it('should not include percent when both progressbar and showPercent are false'):
+        xml = """<?xml version="1.0"?>
+        <graph string="My indicator" type="indicator" />
+        """
+        graph = parse_graph(xml)
+        result = graph.process(50, 100)
+        expect(result).not_to(have_key('percent'))
+        expect(result).not_to(have_key('progressbar'))
+        expect(result).not_to(have_key('showPercent'))
+
     with it("should parse a chart graph XML with type line"):
         xml = """<?xml version="1.0"?>
     <graph type="line" y_range="auto">