diff --git a/contrib/inventory/ec2.py b/contrib/inventory/ec2.py
index 39102ce616b..2982ac6c544 100755
--- a/contrib/inventory/ec2.py
+++ b/contrib/inventory/ec2.py
@@ -340,18 +340,18 @@ class Ec2Inventory(object):
 
         # Regions
         self.regions = []
-        configRegions = config.get('ec2', 'regions')
-        if (configRegions == 'all'):
+        config_regions = config.get('ec2', 'regions')
+        if (config_regions == 'all'):
             if self.eucalyptus_host:
                 self.regions.append(boto.connect_euca(host=self.eucalyptus_host).region.name, **self.credentials)
             else:
-                configRegions_exclude = config.get('ec2', 'regions_exclude')
+                config_regions_exclude = config.get('ec2', 'regions_exclude')
 
-                for regionInfo in ec2.regions():
-                    if regionInfo.name not in configRegions_exclude:
-                        self.regions.append(regionInfo.name)
+                for region_info in ec2.regions():
+                    if region_info.name not in config_regions_exclude:
+                        self.regions.append(region_info.name)
         else:
-            self.regions = configRegions.split(",")
+            self.regions = config_regions.split(",")
         if 'auto' in self.regions:
             env_region = os.environ.get('AWS_REGION')
             if env_region is None: