diff --git a/lib/miq_automation_engine/engine/miq_ae_engine.rb b/lib/miq_automation_engine/engine/miq_ae_engine.rb
index 461656f06..fa0957468 100644
--- a/lib/miq_automation_engine/engine/miq_ae_engine.rb
+++ b/lib/miq_automation_engine/engine/miq_ae_engine.rb
@@ -119,7 +119,7 @@ def self.deliver(*args)
 
       if ws.nil? || ws.root.nil?
         message = "Error delivering #{options[:attrs].inspect} for object [#{object_name}] with state [#{state}] to Automate: Empty Workspace"
-        _log.error("#{message}")
+        _log.error(message)
         return nil
       end
 
@@ -138,12 +138,12 @@ def self.deliver(*args)
           options[:ae_state_previous] = YAML.dump(ws.current_state_info) unless ws.current_state_info.empty?
 
           message = "Requeuing #{options.inspect} for object [#{object_name}] with state [#{options[:state]}] to Automate for delivery in [#{ae_retry_interval}] seconds"
-          _log.info("#{message}")
+          _log.info(message)
           deliver_queue(options, :deliver_on => deliver_on)
         else
           if ae_result.casecmp('error').zero?
             message = "Error delivering #{options[:attrs].inspect} for object [#{object_name}] with state [#{state}] to Automate: #{ws.root['ae_message']}"
-            _log.error("#{message}")
+            _log.error(message)
           end
           MiqAeEvent.process_result(ae_result, automate_attrs) if options[:instance_name].to_s.casecmp('EVENT').zero?
         end
@@ -152,7 +152,7 @@ def self.deliver(*args)
       return ws
     rescue MiqAeException::Error => err
       message = "Error delivering #{automate_attrs.inspect} for object [#{object_name}] with state [#{state}] to Automate: #{err.message}"
-      _log.error("#{message}")
+      _log.error(message)
     ensure
       vmdb_object.after_ae_delivery(ae_result.to_s.downcase) if vmdb_object.respond_to?(:after_ae_delivery)
     end
@@ -212,7 +212,7 @@ def self.create_automation_attribute_name(object)
 
   def self.create_automation_attribute_key(object, attr_name = nil)
     klass_name  = create_automation_attribute_class_name(object)
-    return "#{klass_name}" if automation_attribute_is_array?(klass_name)
+    return klass_name.to_s if automation_attribute_is_array?(klass_name)
     attr_name ||= create_automation_attribute_name(object)
     "#{klass_name}::#{attr_name}"
   end
diff --git a/lib/miq_automation_engine/models/miq_ae_method_yaml.rb b/lib/miq_automation_engine/models/miq_ae_method_yaml.rb
index 8a90055e3..5ff0e1a78 100644
--- a/lib/miq_automation_engine/models/miq_ae_method_yaml.rb
+++ b/lib/miq_automation_engine/models/miq_ae_method_yaml.rb
@@ -10,7 +10,7 @@ def initialize(filename = nil)
   def define_instance_variables
     @ae_method_obj['object']['attributes'].each do |k, v|
       instance_variable_set("@#{k}", v)
-      singleton_class.class_eval { attr_accessor "#{k}" }
+      singleton_class.class_eval { attr_accessor k.to_s }
       send("#{k}=", v)
     end
   end
diff --git a/lib/miq_automation_engine/service_models/miq_ae_service_methods.rb b/lib/miq_automation_engine/service_models/miq_ae_service_methods.rb
index 9a1fab1ea..9803b885f 100644
--- a/lib/miq_automation_engine/service_models/miq_ae_service_methods.rb
+++ b/lib/miq_automation_engine/service_models/miq_ae_service_methods.rb
@@ -121,7 +121,7 @@ def self.service_now_eccq_insert(server, username, password, agent, queue, topic
       $log.error hserr.backtrace.join("\n")
       raise
     rescue => err
-      _log.error "#{err}"
+      _log.error err.to_s
       $log.error err.backtrace.join("\n")
       raise
     end
diff --git a/lib/miq_automation_engine/service_models/mixins/miq_ae_service_miq_provision_mixin.rb b/lib/miq_automation_engine/service_models/mixins/miq_ae_service_miq_provision_mixin.rb
index a25c36f45..fe0297d3f 100644
--- a/lib/miq_automation_engine/service_models/mixins/miq_ae_service_miq_provision_mixin.rb
+++ b/lib/miq_automation_engine/service_models/mixins/miq_ae_service_miq_provision_mixin.rb
@@ -57,7 +57,7 @@ def set_dvs(portgroup, switch = portgroup)
   end
 
   def set_vlan(vlan)
-    set_option(:vlan, ["#{vlan}", "#{vlan}"])
+    set_option(:vlan, [vlan.to_s, vlan.to_s])
   end
 
   def get_folder_paths
diff --git a/spec/miq_ae_object_spec.rb b/spec/miq_ae_object_spec.rb
index b8e557fe3..9b515fc0a 100644
--- a/spec/miq_ae_object_spec.rb
+++ b/spec/miq_ae_object_spec.rb
@@ -63,7 +63,7 @@ def value_match(value, xml_value)
   end
 
   it "#process_args_as_attributes with a hash with an object reference" do
-    result = @miq_obj.process_args_as_attributes("VmOrTemplate::vm" => "#{@vm.id}")
+    result = @miq_obj.process_args_as_attributes("VmOrTemplate::vm" => @vm.id.to_s)
     expect(result["vm_id"]).to eq(@vm.id.to_s)
     expect(result["vm"]).to be_kind_of(MiqAeMethodService::MiqAeServiceVmOrTemplate)
   end
diff --git a/spec/service_methods/miq_ae_service_manageiq-providers-cloud_manager-provision_spec.rb b/spec/service_methods/miq_ae_service_manageiq-providers-cloud_manager-provision_spec.rb
index b224af25e..60bd7e90b 100644
--- a/spec/service_methods/miq_ae_service_manageiq-providers-cloud_manager-provision_spec.rb
+++ b/spec/service_methods/miq_ae_service_manageiq-providers-cloud_manager-provision_spec.rb
@@ -35,7 +35,7 @@ module MiqAeServiceManageIQ_Providers_CloudManager_ProvisionSpec
           end
 
           %w(template clone_to_vm).each do |provision_type|
-            it "#{provision_type}" do
+            it provision_type.to_s do
               @miq_provision.update_attributes(:provision_type => provision_type)
               expect(ae_svc_prov.target_type).to eq('vm')
             end