diff --git a/glances/amps/glances_amp.py b/glances/amps/glances_amp.py
index 3d5e16a3..60d2cbec 100644
--- a/glances/amps/glances_amp.py
+++ b/glances/amps/glances_amp.py
@@ -130,6 +130,14 @@ class GlancesAmp(object):
         """Return refresh time in seconds for the current application monitoring process."""
         return self.get('refresh')
 
+    def one_line(self):
+        """Return True|False if the AMP shoukd be displayed in oneline (one_lineline=true|false)."""
+        ret = self.get('one_line')
+        if ret is None:
+            return False
+        else:
+            return ret.lower().startswith('true')
+
     def time_until_refresh(self):
         """Return time in seconds until refresh."""
         return self.timer.get()
diff --git a/glances/amps/glances_nginx.py b/glances/amps/glances_nginx.py
index c9cdcdc0..86f02c75 100644
--- a/glances/amps/glances_nginx.py
+++ b/glances/amps/glances_nginx.py
@@ -81,7 +81,7 @@ class Amp(GlancesAmp):
             req = requests.get(self.get('status_url'))
             if req.ok:
                 # u'Active connections: 1 \nserver accepts handled requests\n 1 1 1 \nReading: 0 Writing: 1 Waiting: 0 \n'
-                if self.get('one_line') is not None and self.get('one_line').lower() == 'true':
+                if self.one_line():
                     self.set_result(req.text.replace('\n', ''))
                 else:
                     self.set_result(req.text)