diff --git a/src/amd/vulkan/radv_nir_to_llvm.c b/src/amd/vulkan/radv_nir_to_llvm.c
index 9637271b1b6..581513e3859 100644
--- a/src/amd/vulkan/radv_nir_to_llvm.c
+++ b/src/amd/vulkan/radv_nir_to_llvm.c
@@ -2285,7 +2285,7 @@ static LLVMValueRef ngg_get_ordered_id(struct radv_shader_context *ctx)
 {
 	return ac_build_bfe(&ctx->ac, ac_get_arg(&ctx->ac, ctx->args->gs_tg_info),
 			    ctx->ac.i32_0,
-			    LLVMConstInt(ctx->ac.i32, 11, false),
+			    LLVMConstInt(ctx->ac.i32, 12, false),
 			    false);
 }
 
diff --git a/src/amd/vulkan/radv_shader_args.h b/src/amd/vulkan/radv_shader_args.h
index 0f57058bd6e..3c7aceb6385 100644
--- a/src/amd/vulkan/radv_shader_args.h
+++ b/src/amd/vulkan/radv_shader_args.h
@@ -50,7 +50,7 @@ struct radv_shader_args {
 
 	/* HW GS */
 	/* On gfx10:
-	 *  - bits 0..10: ordered_wave_id
+	 *  - bits 0..11: ordered_wave_id
 	 *  - bits 12..20: number of vertices in group
 	 *  - bits 22..30: number of primitives in group
 	 */