diff --git a/include/Nazara/Vulkan/VkDeviceObject.hpp b/include/Nazara/Vulkan/VkDeviceObject.hpp
index 49d70171f..210980a17 100644
--- a/include/Nazara/Vulkan/VkDeviceObject.hpp
+++ b/include/Nazara/Vulkan/VkDeviceObject.hpp
@@ -33,7 +33,7 @@ namespace Nz
 				DeviceObject& operator=(const DeviceObject&) = delete;
 				DeviceObject& operator=(DeviceObject&&) = delete;
 
-				inline operator VkType();
+				inline operator VkType() const;
 
 			protected:
 				DeviceHandle m_device;
diff --git a/include/Nazara/Vulkan/VkDeviceObject.inl b/include/Nazara/Vulkan/VkDeviceObject.inl
index 8bd9eebe6..ab08688bd 100644
--- a/include/Nazara/Vulkan/VkDeviceObject.inl
+++ b/include/Nazara/Vulkan/VkDeviceObject.inl
@@ -76,7 +76,7 @@ namespace Nz
 		}
 
 		template<typename C, typename VkType, typename CreateInfo>
-		inline DeviceObject<C, VkType, CreateInfo>::operator VkType()
+		inline DeviceObject<C, VkType, CreateInfo>::operator VkType() const
 		{
 			return m_handle;
 		}
diff --git a/include/Nazara/Vulkan/VkSurface.hpp b/include/Nazara/Vulkan/VkSurface.hpp
index 53cb7fd5e..b4d6a019d 100644
--- a/include/Nazara/Vulkan/VkSurface.hpp
+++ b/include/Nazara/Vulkan/VkSurface.hpp
@@ -76,7 +76,7 @@ namespace Nz
 				Surface& operator=(const Surface&) = delete;
 				Surface& operator=(Surface&&) = delete;
 
-				inline operator VkSurfaceKHR();
+				inline operator VkSurfaceKHR() const;
 
 			private:
 				inline bool Create(const VkAllocationCallbacks* allocator);
diff --git a/include/Nazara/Vulkan/VkSurface.inl b/include/Nazara/Vulkan/VkSurface.inl
index 81b199d08..dec897cec 100644
--- a/include/Nazara/Vulkan/VkSurface.inl
+++ b/include/Nazara/Vulkan/VkSurface.inl
@@ -287,7 +287,7 @@ namespace Nz
 			return false;
 		}
 
-		inline Surface::operator VkSurfaceKHR()
+		inline Surface::operator VkSurfaceKHR() const
 		{
 			return m_surface;
 		}