diff --git a/libs/vkd3d-shader/ir.c b/libs/vkd3d-shader/ir.c
index 1eb0d891f..db7c9b36d 100644
--- a/libs/vkd3d-shader/ir.c
+++ b/libs/vkd3d-shader/ir.c
@@ -9554,6 +9554,7 @@ static void vsir_validate_register(struct validation_context *ctx,
         [VKD3DSPR_LOCALTHREADINDEX] = {true, 0, VSIR_DIMENSION_VEC4},
         [VKD3DSPR_COVERAGE]         = {true, 0, VSIR_DIMENSION_VEC4},
         [VKD3DSPR_SAMPLEMASK]       = {true, 0, VSIR_DIMENSION_SCALAR},
+        [VKD3DSPR_GSINSTID]         = {true, 0, VSIR_DIMENSION_SCALAR},
         [VKD3DSPR_DEPTHOUTGE]       = {true, 0, VSIR_DIMENSION_SCALAR},
         [VKD3DSPR_DEPTHOUTLE]       = {true, 0, VSIR_DIMENSION_SCALAR},
     };
@@ -9692,10 +9693,6 @@ static void vsir_validate_register(struct validation_context *ctx,
             vsir_validate_register_without_indices(ctx, reg);
             break;
 
-        case VKD3DSPR_GSINSTID:
-            vsir_validate_register_without_indices(ctx, reg);
-            break;
-
         case VKD3DSPR_OUTSTENCILREF:
             vsir_validate_register_without_indices(ctx, reg);
             break;