diff --git a/src/common/platform/posix/cocoa/i_video.mm b/src/common/platform/posix/cocoa/i_video.mm
index 1ea8eb8264..342aabcbc1 100644
--- a/src/common/platform/posix/cocoa/i_video.mm
+++ b/src/common/platform/posix/cocoa/i_video.mm
@@ -61,7 +61,6 @@
 #endif
 
 bool I_CreateVulkanSurface(VkInstance instance, VkSurfaceKHR *surface);
-bool I_GetVulkanPlatformExtensions(unsigned int *count, const char **names);
 
 extern bool ToggleFullscreen;
 
@@ -440,8 +439,9 @@ public:
 
 				VulkanInstanceBuilder builder;
 				builder.DebugLayer(vk_debug);
-				for (unsigned int i = 0; i < count; i++)
-					builder.RequireExtension(names[i]);
+				builder.RequireExtension(VK_KHR_SURFACE_EXTENSION_NAME); // KHR_surface, required
+				builder.OptionalExtension(VK_EXT_METAL_SURFACE_EXTENSION_NAME); // EXT_metal_surface, optional, preferred
+				builder.OptionalExtension(VK_MVK_MACOS_SURFACE_EXTENSION_NAME); // MVK_macos_surface, optional, deprecated
 				auto vulkanInstance = builder.Create();
 
 				VkSurfaceKHR surfacehandle = nullptr;
@@ -924,63 +924,6 @@ void I_GetVulkanDrawableSize(int *width, int *height)
 	}
 }
 
-bool I_GetVulkanPlatformExtensions(unsigned int *count, const char **names)
-{
-	static std::vector<const char*> extensions;
-
-	if (extensions.empty())
-	{
-		uint32_t extensionPropertyCount = 0;
-		vkEnumerateInstanceExtensionProperties(nullptr, &extensionPropertyCount, nullptr);
-
-		std::vector<VkExtensionProperties> extensionProperties(extensionPropertyCount);
-		vkEnumerateInstanceExtensionProperties(nullptr, &extensionPropertyCount, extensionProperties.data());
-
-		static const char* const EXTENSION_NAMES[] =
-		{
-			VK_KHR_SURFACE_EXTENSION_NAME,        // KHR_surface, required
-			VK_EXT_METAL_SURFACE_EXTENSION_NAME,  // EXT_metal_surface, optional, preferred
-			VK_MVK_MACOS_SURFACE_EXTENSION_NAME,  // MVK_macos_surface, optional, deprecated
-		};
-
-		for (const VkExtensionProperties &currentProperties : extensionProperties)
-		{
-			for (const char *const extensionName : EXTENSION_NAMES)
-			{
-				if (strcmp(currentProperties.extensionName, extensionName) == 0)
-				{
-					extensions.push_back(extensionName);
-				}
-			}
-		}
-	}
-
-	static const unsigned int extensionCount = static_cast<unsigned int>(extensions.size());
-	assert(extensionCount >= 2); // KHR_surface + at least one of the platform surface extentions
-
-	if (count == nullptr && names == nullptr)
-	{
-		return false;
-	}
-	else if (names == nullptr)
-	{
-		*count = extensionCount;
-		return true;
-	}
-	else
-	{
-		const bool result = *count >= extensionCount;
-		*count = min(*count, extensionCount);
-
-		for (unsigned int i = 0; i < *count; ++i)
-		{
-			names[i] = extensions[i];
-		}
-
-		return result;
-	}
-}
-
 bool I_CreateVulkanSurface(VkInstance instance, VkSurfaceKHR *surface)
 {
 	NSView *const view = CocoaVideo::GetWindow().contentView;