diff --git a/libs/vkd3d-shader/hlsl_codegen.c b/libs/vkd3d-shader/hlsl_codegen.c
index d5534d8c..00cb3711 100644
--- a/libs/vkd3d-shader/hlsl_codegen.c
+++ b/libs/vkd3d-shader/hlsl_codegen.c
@@ -2908,7 +2908,7 @@ static const struct hlsl_ir_var *get_reserved_object(struct hlsl_ctx *ctx, enum
 
     LIST_FOR_EACH_ENTRY(var, &ctx->extern_vars, const struct hlsl_ir_var, extern_entry)
     {
-        if (var->last_read && var->reg_reservation.type == get_regset_name(regset)
+        if (var->reg_reservation.type == get_regset_name(regset)
                 && var->reg_reservation.index == index)
             return var;
     }
diff --git a/tests/register-reservations.shader_test b/tests/register-reservations.shader_test
index 04de717b..f0287d00 100644
--- a/tests/register-reservations.shader_test
+++ b/tests/register-reservations.shader_test
@@ -34,7 +34,7 @@ float4 main() : sv_target
 
 [test]
 draw quad
-todo probe all rgba (1.0, 1.0, 1.0, 99.0)
+probe all rgba (1.0, 1.0, 1.0, 99.0)
 
 
 [pixel shader]