diff --git a/gpu/src/command_buffer.zig b/gpu/src/command_buffer.zig
index 90685a6e..90798545 100644
--- a/gpu/src/command_buffer.zig
+++ b/gpu/src/command_buffer.zig
@@ -1,13 +1,8 @@
 const ChainedStruct = @import("types.zig").ChainedStruct;
 
-pub const CommandBuffer = enum(usize) {
-    _,
+pub const CommandBuffer = *opaque {};
 
-    // TODO: verify there is a use case for nullable value of this type.
-    pub const none: CommandBuffer = @intToEnum(CommandBuffer, 0);
-
-    pub const Descriptor = extern struct {
-        next_in_chain: *const ChainedStruct,
-        label: ?[*:0]const u8 = null,
-    };
+pub const CommandBufferDescriptor = extern struct {
+    next_in_chain: *const ChainedStruct,
+    label: ?[*:0]const u8 = null,
 };