diff --git a/contrib/inventory/ec2.py b/contrib/inventory/ec2.py
index 3def6037a1f..dcc369e1249 100755
--- a/contrib/inventory/ec2.py
+++ b/contrib/inventory/ec2.py
@@ -1313,7 +1313,7 @@ class Ec2Inventory(object):
             elif key == 'ec2_tags':
                 for k, v in value.items():
                     if self.expand_csv_tags and ',' in v:
-                        v = map(lambda x: x.strip(), v.split(','))
+                        v = list(map(lambda x: x.strip(), v.split(',')))
                     key = self.to_safe('ec2_tag_' + k)
                     instance_vars[key] = v
             elif key == 'ec2_groups':