diff --git a/glances/plugins/glances_cpu.py b/glances/plugins/glances_cpu.py
index f8412d95..fe66ccb7 100644
--- a/glances/plugins/glances_cpu.py
+++ b/glances/plugins/glances_cpu.py
@@ -81,6 +81,11 @@ another while ensuring that the tasks do not conflict.',
                         'rate': True,
                         'min_symbol': 'K',
                         'short_name': 'sw_int'},
+    'syscalls': {'description': 'number of system calls per second. Always 0 on Linux OS.',
+                 'unit': 'number',
+                 'rate': True,
+                 'min_symbol': 'K',
+                 'short_name': 'sw_int'},
     'cpucore': {'description': 'Total number of CPU core.',
                 'unit': 'number'},
     'time_since_update': {'description': 'Number of seconds since last update.',
diff --git a/glances/plugins/glances_plugin.py b/glances/plugins/glances_plugin.py
index 24981c6e..a24a906c 100644
--- a/glances/plugins/glances_plugin.py
+++ b/glances/plugins/glances_plugin.py
@@ -1005,27 +1005,34 @@ class GlancesPlugin(object):
             return []
 
         # Check if a shortname is defined
-        if 'short_name' in self.fields_description[key]:
+        if key in self.fields_description and \
+           'short_name' in self.fields_description[key]:
             key_name = self.fields_description[key]['short_name']
         else:
             key_name = key
 
         # Check if unit is defined and get the short unit char in the unit_sort dict
-        if 'unit' in self.fields_description[key] and self.fields_description[key]['unit'] in fields_unit_short:
+        if key in self.fields_description and \
+           'unit' in self.fields_description[key] and \
+           self.fields_description[key]['unit'] in fields_unit_short:
             # Get the shortname
             unit_short = fields_unit_short[self.fields_description[key]['unit']]
         else:
             unit_short = ''
 
         # Check if unit is defined and get the unit type unit_type dict
-        if 'unit' in self.fields_description[key] and self.fields_description[key]['unit'] in fields_unit_type:
+        if key in self.fields_description and \
+           'unit' in self.fields_description[key] and \
+           self.fields_description[key]['unit'] in fields_unit_type:
             # Get the shortname
             unit_type = fields_unit_type[self.fields_description[key]['unit']]
         else:
             unit_type = 'float'
 
         # Is it a rate ? Yes, compute it thanks to the time_since_update key
-        if 'rate' in self.fields_description[key] and self.fields_description[key]['rate'] is True:
+        if key in self.fields_description and \
+           'rate' in self.fields_description[key] and \
+           self.fields_description[key]['rate'] is True:
             value = self.stats[key] // self.stats['time_since_update']
         else:
             value = self.stats[key]