diff --git a/openstack/compute/v2/extensions/secgroups/results.go b/openstack/compute/v2/extensions/secgroups/results.go
index a360782..478c5dc 100644
--- a/openstack/compute/v2/extensions/secgroups/results.go
+++ b/openstack/compute/v2/extensions/secgroups/results.go
@@ -87,7 +87,8 @@
 		SecurityGroups []SecurityGroup `mapstructure:"security_groups"`
 	}
 
-	err := mapstructure.Decode(casted, &response)
+	err := mapstructure.WeakDecode(casted, &response)
+
 	return response.SecurityGroups, err
 }
 
@@ -140,7 +141,7 @@
 		Rule Rule `mapstructure:"security_group_rule"`
 	}
 
-	err := mapstructure.Decode(r.Body, &response)
+	err := mapstructure.WeakDecode(r.Body, &response)
 
 	return &response.Rule, err
 }