diff --git a/base/VulkanDevice.cpp b/base/VulkanDevice.cpp
index b508a099..b4c4042a 100644
--- a/base/VulkanDevice.cpp
+++ b/base/VulkanDevice.cpp
@@ -3,7 +3,7 @@
  * 
  * Encapsulates a physical Vulkan device and its logical representation
  *
- * Copyright (C) 2016-2023 by Sascha Willems - www.saschawillems.de
+ * Copyright (C) 2016-2024 by Sascha Willems - www.saschawillems.de
  *
  * This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
  */
@@ -49,7 +49,7 @@ namespace vks
 			std::vector<VkExtensionProperties> extensions(extCount);
 			if (vkEnumerateDeviceExtensionProperties(physicalDevice, nullptr, &extCount, &extensions.front()) == VK_SUCCESS)
 			{
-				for (auto ext : extensions)
+				for (auto& ext : extensions)
 				{
 					supportedExtensions.push_back(ext.extensionName);
 				}
diff --git a/base/VulkanUIOverlay.cpp b/base/VulkanUIOverlay.cpp
index 63eb055a..c6730919 100644
--- a/base/VulkanUIOverlay.cpp
+++ b/base/VulkanUIOverlay.cpp
@@ -2,7 +2,7 @@
 /*
 * UI overlay class using ImGui
 *
-* Copyright (C) 2017 by Sascha Willems - www.saschawillems.de
+* Copyright (C) 2017-2024 by Sascha Willems - www.saschawillems.de
 *
 * This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
 */
diff --git a/base/VulkanUIOverlay.h b/base/VulkanUIOverlay.h
index 94dc3022..3371e799 100644
--- a/base/VulkanUIOverlay.h
+++ b/base/VulkanUIOverlay.h
@@ -1,7 +1,7 @@
 /*
 * UI overlay class using ImGui
 *
-* Copyright (C) 2017 by Sascha Willems - www.saschawillems.de
+* Copyright (C) 2017-2024 by Sascha Willems - www.saschawillems.de
 *
 * This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
 */
@@ -28,43 +28,43 @@
 #include "VulkanAndroid.h"
 #endif
 
-namespace vks 
+namespace vks
 {
-	class UIOverlay 
+	class UIOverlay
 	{
 	public:
-		vks::VulkanDevice *device;
-		VkQueue queue;
+		vks::VulkanDevice* device{ nullptr };
+		VkQueue queue{ VK_NULL_HANDLE };
 
-		VkSampleCountFlagBits rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;
-		uint32_t subpass = 0;
+		VkSampleCountFlagBits rasterizationSamples{ VK_SAMPLE_COUNT_1_BIT };
+		uint32_t subpass{ 0 };
 
 		vks::Buffer vertexBuffer;
 		vks::Buffer indexBuffer;
-		int32_t vertexCount = 0;
-		int32_t indexCount = 0;
+		int32_t vertexCount{ 0 };
+		int32_t indexCount{ 0 };
 
 		std::vector<VkPipelineShaderStageCreateInfo> shaders;
 
-		VkDescriptorPool descriptorPool;
-		VkDescriptorSetLayout descriptorSetLayout;
-		VkDescriptorSet descriptorSet;
-		VkPipelineLayout pipelineLayout;
-		VkPipeline pipeline;
+		VkDescriptorPool descriptorPool{ VK_NULL_HANDLE };
+		VkDescriptorSetLayout descriptorSetLayout{ VK_NULL_HANDLE };
+		VkDescriptorSet descriptorSet{ VK_NULL_HANDLE };
+		VkPipelineLayout pipelineLayout{ VK_NULL_HANDLE };
+		VkPipeline pipeline{ VK_NULL_HANDLE };
 
-		VkDeviceMemory fontMemory = VK_NULL_HANDLE;
-		VkImage fontImage = VK_NULL_HANDLE;
-		VkImageView fontView = VK_NULL_HANDLE;
-		VkSampler sampler;
+		VkDeviceMemory fontMemory{ VK_NULL_HANDLE };
+		VkImage fontImage{ VK_NULL_HANDLE };
+		VkImageView fontView{ VK_NULL_HANDLE };
+		VkSampler sampler{ VK_NULL_HANDLE };
 
 		struct PushConstBlock {
 			glm::vec2 scale;
 			glm::vec2 translate;
 		} pushConstBlock;
 
-		bool visible = true;
-		bool updated = false;
-		float scale = 1.0f;
+		bool visible{ true };
+		bool updated{ false };
+		float scale{ 1.0f };
 
 		UIOverlay();
 		~UIOverlay();