diff --git a/libs/vkd3d-shader/hlsl_codegen.c b/libs/vkd3d-shader/hlsl_codegen.c
index 520ba20a..f2367dc5 100644
--- a/libs/vkd3d-shader/hlsl_codegen.c
+++ b/libs/vkd3d-shader/hlsl_codegen.c
@@ -4777,7 +4777,7 @@ static const struct hlsl_buffer *get_reserved_buffer(struct hlsl_ctx *ctx, uint3
 
     LIST_FOR_EACH_ENTRY(buffer, &ctx->buffers, const struct hlsl_buffer, entry)
     {
-        if (buffer->used_size && buffer->reservation.reg_type == 'b'
+        if (buffer->reservation.reg_type == 'b'
                 && buffer->reservation.reg_space == space && buffer->reservation.reg_index == index)
             return buffer;
     }
diff --git a/tests/hlsl/register-reservations-numeric.shader_test b/tests/hlsl/register-reservations-numeric.shader_test
index 1e977271..b03bf07d 100644
--- a/tests/hlsl/register-reservations-numeric.shader_test
+++ b/tests/hlsl/register-reservations-numeric.shader_test
@@ -717,7 +717,7 @@ float4 main(uniform float param) : sv_target
     return glob * param * a * b * c * d * e * f * g * h * i * j * k * l * m;
 }
 
-[pixel shader fail todo]
+[pixel shader fail]
 // Unused cbuffers still reserve their slot, and count towards the limit.
 float glob;