diff --git a/examples/buffer_suballocation/deferred_uploads.v b/examples/buffer_suballocation/deferred_uploads.v
index 9f0fa0a..b82f83f 100644
--- a/examples/buffer_suballocation/deferred_uploads.v
+++ b/examples/buffer_suballocation/deferred_uploads.v
@@ -20,7 +20,7 @@ fn select_transfer_family(properties []vk.QueueFamilyProperties) ?u32 {
 
 fn transfer_queue_family(physical_device vk.PhysicalDevice) !u32 {
 	mut count := u32(0)
-	mut no_properties := unsafe { nil }
+	mut no_properties := unsafe { &vk.QueueFamilyProperties(nil) }
 	vk.get_physical_device_queue_family_properties(physical_device, &count, mut no_properties)
 	if count == 0 { return error('physical device has no queue families') }
 	mut properties := []vk.QueueFamilyProperties{len: int(count)}
diff --git a/memory_policy.v b/memory_policy.v
index 6cf4f42..da79d4d 100644
--- a/memory_policy.v
+++ b/memory_policy.v
@@ -81,7 +81,7 @@ pub fn supports_memory_budget(physical_device vk.PhysicalDevice) bool {
 	}
 	for {
 		mut count := u32(0)
-		mut no_properties := unsafe { nil }
+		mut no_properties := unsafe { &vk.ExtensionProperties(nil) }
 		if vk.enumerate_device_extension_properties(physical_device, unsafe { nil }, &count, mut no_properties) != .success
 			|| count == 0 {
 			return false