diff --git a/libs/vkd3d-shader/ir.c b/libs/vkd3d-shader/ir.c
index 4b6912204..950931025 100644
--- a/libs/vkd3d-shader/ir.c
+++ b/libs/vkd3d-shader/ir.c
@@ -8359,6 +8359,7 @@ static void vsir_validate_src_param(struct validation_context *ctx,
         case VKD3DSPR_NULL:
         case VKD3DSPR_DEPTHOUT:
         case VKD3DSPR_DEPTHOUTGE:
+        case VKD3DSPR_DEPTHOUTLE:
             validator_error(ctx, VKD3D_SHADER_ERROR_VSIR_INVALID_REGISTER_TYPE,
                     "Invalid register of type %#x used as source parameter.", src->reg.type);
             break;